Seireitou Kawahiru

"A man's life is like traveling down a long road with a heavy load on his shoulders. The first time I heard that, I thought, "what a lame thing to say", but what do you know... there was a point to it. It's not really a burden. Everyone's got both hands full of something that matters. You just don't realize it when you're carrying it. It's only after it slips out of your hands that you realize how heavy it was in the first place. So many times, I thought I'd never carry a load like that ever again. And yet, before I realized it... I was carrying it again. I'd feel so much better if I just got rid of it. But I just can't bring myself to do it. Without those guys, just walking around isn't fun anymore."

- Seireitou speaking about his close partner and both disciples, among many others.


 * "One demon... that warred with the Heavens." - Seireitou-shishō

Seireitou Shōin Kawahiru no Jirō (河昼 次郎 松陰 精霊塔, Kawahiru no Jirō Shōin Seireitō) is the former Captain of the Eighth Division in the Gotei 13, preceding Shunsui Kyōraku. He is the second born offspring of the King of Souls and Tsuyuri Kawahiru, the younger brother of Madara Kawahiru, and the older brother of both Sannotō Kawahiru and Yūkina Kawahiru. Seireitou was engaged to Senka Kururugi a month before her execution, and several centuries following this event, he was married to Shiori Miyamoto. Prior to the latter's death, they bore a son named Suzaku Kawahiru. Many took to calling him "Silver-Hairs" Seireitou (銀色の髪の純粋な魂, Ginpachi no Seireitō), among both allies and enemies, due to his natural silver-colored hair which is deemed a rarity. However, his most infamous title was earned during the events of the Quincy Blood War; named the Shiroyasha (白夜叉, literally "White Demon"), because of his demonic-like appearance on the battlefield as well as his white hair and white Captain's haori. To this day, Seireitou is still revered as one of the four Yonkō, four brave heroes of the aforementioned war. During his Captaincy, Seireitou's division members took the collective name of the "Silver-Hairs Gang" and still align themselves with him even to this day. Along with Kamui, Seireitou co-founded the Order of the Seijin, and served as one of its first three Grandmasters. These factors, in addition to his heritage, has caused Seireitou to be labeled as a "dangerous element" by Central 46. He is illustriously known as Soul Society's Hakuda Grandmaster (白打団長 (ハッカダー・グランドマスター), Hakuda Gurandomasutā; Japanese for "highest-ranked of all martial arts"). Seireitou's exploits in Yuánrǎng alongside Sun Wukong earned him a reputation as an unrivaled warrior of the martial arts and following his eventual victory over Pak Tai, he was bestowed with the title "Avatar of Xuan Wu" (玄武化身, Xuánwǔ Huàshēn; literally "Incarnation of the Dark/Mysterious Martiality", referencing Xuan Wu, a high-ranked Taoist deity and revered as the god of martial arts).

Throughout many of his initial adventures in the series, he has faced and defeated a variety of dangerous opponents, including that of his eldest brother. Following the end of the Second Reikai War, Seireitou retired from the Seijin Council, and became the head instructor of the Kawahiru Dojang, living together with Saori Sumeragi, and his two students: Minato Kuramoto and Hinata Kusuhana. In addition, due to a significant decline in proper combat arts being taught to potential Shinigami students, Seireitou was requested by Soul Society to become a Hakuda Instructor within the Shinō Academy during "special war time" situations; a position which he has accepted and subsequently has orchestrated an advanced class so difficult that many students refuse to take it, a ploy done purposely by Seireitou so as to avoid long teaching hours.

Appearance
Seireitou is a fairly tall, slim, and fit man with a rather youthful face despite his age. He, unlike all members of his clan, possesses dark scarlet amber eyes, and also has long silver hair with a lavendar tint that hangs near his cheeks to frame his face. Most noticeably is his eyes, which are always kept half-way opened to imply a sense of boredom and uncaring. He also had, at one time, the addition of a long ponytail in the back of his hair. He wears a white Shihakushō uniform but it is customized and partly resembles a korean-style taekkyeon uniform with an upturned collar and hakama. He now wears a long, white robe over his normal hakama. Seireitou is later seen wearing a white hakama, instead of the black ones he was last seen in. Seireitou wears his robe open in a narrow 'V' down to his waist, closed to below the hips, then open again to the hem, which falls about mid-calf. His robe has long bell sleeves, into which he hides his hands like one does with kimono sleeves. The lining of the robe and edges or layers of the under-robe(s) appear to be black. From other examples, it is likely he is also wearing black tabi with white waraji. His Zanpakutō is not visible with this outfit; however, it is revealed that he wears it on his back waist at an angle, similar to Rangiku Matsumoto.

As a Grandmaster of the Seijin Council, he wears a tannish white uniform that extends past knee-length, seeming akin to that of a tunic. To keep the tunic in place, he wears a form-fit black obi which carries his Zanpakutō on the left side of his hip. He seems to retain a form of white hakama, though much less flowing as his previous attire. His uniform, seeming like a mix of a white tunic and traditional martial art attire, is very loose; as evident from his sleeves. Over this uniform, he wears a brown cloak that is complete with a hood, extending past his ankles. His facial expression seems strange; being one of intense sternness, yet with a whimsical calmness. In the Hell Tournament, Seireitou's hair had become longer and noticeably golden, as opposed to the lavender tint he sported in his silver hair in the fight against Kamui and Datara. He had abandoned the Seijin attire he wore previously, and now dons a dark purple kimono, with a light purple cloak over this. He explains that this cloak functions in a manner similar to Raian's black tenchcoat, in that it repels the effects of spiritual pressure. Seireitou has taken on a habit of wearing tomoe beads around his neck, which was a gift from Hazuma Kawahiru, allowing Seireitou to return to the Murinne Precipice World.

While he does seem to retain the two former uniforms at specific intervals, he seems to have adapted a unique uniform similar to a combination of Sōsuke Aizen's and Gin Ichimaru's upon his rebirth, and return to his allies. Kamui notes that it is almost exactly like the uniform that their father wore during his initial reign as Spirit King. Seireitou's attire consists of white sashinuki hakama, worn only by himself and Kamui, tied by a wide black obi around his waist which keeps his Zanpakutō fastened to his left hip; unlike most obi, it's belt ends hang downwards on the left side. The top consists of a thin white dobok, which splits downwards and apart evenly. Over this, Seireitou wears a long white robe that has similar bell sleeves to Ichimaru's former uniform. Leading up to his shoulders, both sleeves sport a thick long black bar running down the length of each white sleeve; these black bars are also shown to be on his hakama, running down the length of his legs on the outer edges. Similar to Aizen's uniform, Seireitou also possesses a white collar that is kept up, but only block the view of his chin area. The black bars that extend to the shoulders also run up the collar on each opposite side. It should also be noted that Seireitou's expression with this new appearance is more calm and peaceful, with an air of humility, further confirming that he has settled his despair. He later adapts a clothing style similar to the chinese shenyi.

After the nineteen-month timeskip, following Seireitou's reappearance in the series, he sports a similar appearance to that of his former attire nineteen months ago, with the addition of small armor plates around his shoulder. He has facial hair, in the form of a mustache and chin-hairs, almost similar to that of Shunsui Kyōraku. Despite his haori appearing to be very similar to his former one, Seireitou explains that the haori he wears is the one that Shōyō meant for the successor to the Seiten Shiranui-ryū, and that the one he wore nineteen months ago was merely a replica of the original haori. Unlike the replica, the real haori is crafted from a very rare material that is nearly impossible to find. The purpose of the armor plates are unclear, if they serve any. Underneath, Seireitou wears the same kosode that was worn by Shōyō in many of the flashbacks regarding the latter. These plates were later replaced with silver armour metal plates on both of Seireitou's shoulders that appear as collars surrounding his face and extend outwards down his arms, while also adding the metal band around his waist which connects to three individual silver armor pieces hanging from the front of his waist and on both sides of his hips; similar to the entire armored attire worn by Kyebaek Tae, which is said to be worn by "warlords of Soul Society's history" and may represent the assimilation of the "Shiroyasha" persona in its entirety, according to Saori Sumeragi.

Personality
"That's us... comrades. When you believe the path you're walking on is the right one, no matter how difficult it is, they walk it with you. However, when a time comes when their path just doesn't sit right with you... No matter how perilous that path may be, and even if you're all alone, having turned everyone into enemies... A friend will stand in their comrade's way. That is the sort of man that is..." "That perverted idiot is..." "That sadistic bastard is..." "Our comrade, Kawahiru Seireitou." "If you still believe that you can make this man disappear, then go ahead and try. What is carved deep inside our hearts... are the steel memories of all the battles that we have fought alongside this man. And as for these silver swords, which glow brilliantly with the hue of our souls... If you think they can break, just try to shatter them."

- Raian Getsueikirite, Saori Sumeragi, Ryūka Injiki, and then Raian again, speaking of Seireitou to Sōkudo.

Without a doubt, Seireitou is possibly one of the most unusual characters in the series. He appears to shift from a wise master of the Shinigami arts to that of a naïve child that claims to have the soul of a boy within a man's body, back to that of a warrior who has faced down death his entire life and spends his days reflecting on those experiences, reverting to a man with the spirit and youthfulness of a young boy. Essentially, Seireitou prides himself in "being simple", and would often cause others to believe he himself is simple-minded. Yet despite how simple minded he appears at first, Seireitou would reveal himself to be a complex person with rather difficult to figure out views. One of the more noticeable traits of Seireitou is that he tends to act out of character, portraying traits of a manipulator like Sōsuke Aizen or the suspicious traits of a sarcastic man like Gin Ichimaru. Tetsuro Ryuzaki commented that Seireitou is unpredictable, and it is almost impossible to discern his thoughts or his motives. Seireitou himself claimed that his main characteristic is being "uncharacteristic". The only one who seems to understand his actions, most of the time, is Raian. In addition, despite his personality having different outlets, the one thing that has never changed in him is the beliefs that he lives his life by. While most appear to be very trivial, there is one that stands out the most, and serves as probably the most characteristic piece of who he is. Seireitou is a firm believer in the principle that the only thing worth protecting is "one's soul", a teaching that was passed down by his teacher, Shōyō. He believes that no matter what happens, so long as his soul exists, he can never be defeated. This unrealistic level of indomitable spirit allows him to overcome challenges that initially appear to be futile. Perhaps an extension of this belief is derived from the promise that he and Raian had made in the past. They had promised to never allow the other one to deter from their path, and if one of them should, the other would kill them. Seireitou states that this way of life is how all four of them, the Yonkō, have dealt with each other all their lives.

Using a medley of quotations (some of which appear not to have much meaning to them, or are merely used at random moments, having almost nothing to do with the situation), he has shown a remarkable ability to consistently shatter the perceptions of many people that he confronts but never appears interested in making someone, as he says, "see things his way". An example of this is that he had stated that if two people share very different views, its better they go their separate ways instead of attempting to reconcile matters. His knowledge of people's true personality appears to go beyond being simply a good judge of character. Despite Kamui's background as a threat to peace, and strong incriminating evidence, Seireitou trusts him with many important tasks. In addition to Seireitou's great trust in the power of one's soul, he also had a deep understanding of the power of love. This perhaps stemmed from the loss of his dearly beloved wife, Shiori Miyamoto, whom he lost in battle to Datara Kawahiru. He possesses incredible insight on people, often knowing if they are troubled or hiding something; he sometimes even knows what a person is thinking, scaring even Raian with his powers of perception. It is hard to recognize this wisdom due to his almost constant shift in attitude, usually displaying immature and childish trains of thought and actions, but it is through these misunderstood guises that his true self shines through in a most dazzling manner.

Adding to his potpourri of randomness that he considers a personality, despite his talk of morals and honor, Seireitou appears to be very willing to commit actions that would be considered criminal offenses. This makes him appear very hypocritical and he will attempt to justify his actions with several excuses, most of which appear not to really make any sense. When such thoughts are in his head, he reveals it through "evil"-like facial expressions, although these are very rare moments and usually serve only to unnerve an opponent. Despite resolving never to kill, he is shown attempting murder on more than one occasion. In addition, he has a habit of hitting people, even those he doesn't know, for very loosely-justified reasons; an example of this was shown when he met his Reigai version, when he slammed the latter's head into a concrete wall without even questioning the situation. This serves to exemplify that Seireitou is very open when it comes to feelings of annoyances, and will not hesitate to act on them. Moving on with his odd traits, Seireitou constantly uses many forms of innuendo in his speech, especially in the sexual manner, in his statements, annoying allies and enemies alike. His typical way of being very inconsistent with his actions gives off an initial impression of being heroic and honorable, later on revealing his motives to be self-serving. While infamous among many of his colleagues and subordinates alike for the selfish and narcissistic aura he gives off, but to those who truly know him, he is a man that always attends to those who need him. In the former regard, he and Kamui are considered the exact same. Although this immature persona can appear to be a negative trait, it is also seen in a more playful-esque light. Subsequently, he is sometimes seen as "tongue-in-cheek" comical, and to another extent, very serious about his family and friends. He typically acts in a goofy, energetic and fun-loving manner, able to cheer up even the depressed Raian at times. Despite these traits, Seireitou is capable of easily frightening anyone when he is upset or enraged, sharing a similar trait with Saori Sumeragi. In regards to his eccentric behavior, Raian states that Seireitou has went through several painful events in his life, going on to say that his inability to protect many of his comrades in the the First Shinigami-Arrancar War still haunts him, and as a result, he is very protective of his current friends. When someone close to him is in danger, Seireitou has no qualms about putting himself at risk to save them, if necessary, as seen when he prioritized the safety of Raian and his group first, over confronting Kamui head-on when his group confronted his entourage. Raian once mentioned to Hibiki Asakura that he "had lost count of the amount of times I [Raian] have wanted to destroy the world so that it could be reborn. But he's [Seireitou]... He's enduring it. He should hate this world more than any of us, but he's putting up with it." This statement was meant to refer to Seireitou's ability to wade through the experiences he had been dealt and still keep moving on with his life.

Seireitou's almost immature and free-spirited personality masks his sage-like and serious attitude, appearing in him when the situation demands it, accompanied with wisdom that has been attained through years of experience. Some state that he is probably unaware of this immaturity. However, Seireitou seems to give off the implication that he is aware of it, claiming that he acts in the aforementioned manner to keep matters around him from getting "too depressing". Raian, however, comically stated that Seireitou had suffered heat stroke at some point in his life. When appearing to be serious (although the term is used loosely), his statements still belie some sense of dry humor and even sarcasm. Seireitou appears to act mostly out of self-interest rather than any sort of philanthropy, whether the situation be trivial or life-threatening. As both a Captain and a former leader of the Order of the Seijin, he comes off to most as a sort of cocky layabout, shirking most of his duties. Seireitou is expertly manipulative, prone to think several steps ahead of those around him and giving him a remarkable (almost annoying) talent for making subordinates act exactly as he wishes despite appearing not to have had a hand in their decisions. However, while these traits do have a place in his real personality, much of his outward persona can perhaps be considered an intentional facade perfectly designed to cause those unfamiliar with him to underestimate his remarkable intelligence and ability. At the core, he is a remarkably devoted commander whose primary focus and personal duty is to his friends and family. Though he hides it well behind a veil of cynicism and self-importance, Seireitou is a man who cares deeply about the people who trust and support him and goes to great lengths to ensure their safety and well-being, even at the risk of his own. As a man with considerable power, Seireitou considers himself a protector to those without and acts accordingly, earning the staunch loyalty of his most trusted compatriots. Despite his numerous complaints of having to lead, he has definitely shown himself to be a great leader. Seireitou has always been able to command the forces of the Gotei 13 in the battle against Datara, despite the seperation of their ranks. In many ways, according to Izaya Kondō, he represented the strength of the old Shinsengumi; steadfast, selfless, and modest. Kamui, in several instances, has professed to having difficulty to differentiate from Seireitou and Shōyō.

As stated by his older brother, Seireitou's most remarkable ability is his will to succeed, pushing himself beyond his limitations, and never giving up even when the odds are stacked against him. Seireitou, for the most part, only fights to win, and usually will spare his opponents, despite initially claiming that he'd kill them. His will to win is often bordering on the extreme, displayed by the bright white glow of spiritual energy that emit from his eyes during such moments. In contrast to this, he appears not to bear much regret to when his opponent has died, whether by Seireitou's own hand or because of other reasons. His staggering power is simultaneously reigned in and enhanced by his fierce unshakeable conscience and indomitable spirit. Seireitou seems to be proud of his own power, but unlike Datara Kawahiru, he seemingly possesses no physical signs of arrogance or overconfidence. This great strength appears to have a hand in his interest in facing powerful opponents, subsequently contributing to an inability to turn down challenges, especially when it concerns a powerful opponent; although regardless, deep down, he is a man of peace, a trait that was influenced by that of his teacher. Although he is a fearsome fighter with nearly unmatched skills, Seireitou will typically use the guise of a coward most of the time to avoid needless bloodshed. However, in complete contrast, he is in fact willing to risk his life for almost anyone. He is typically described by others as lazy, unmotivated, and useless. Although, those same people also seem to note his kind, responsible, and unpredictable self. Despite the fact that he would normally act as a coward and allow others to handle problematic situations, Seireitou is quite aware of the fact that his power outmatches many of those around him and would not hesitate to remind others of this fact. Seireitou has shown himself to have a habit of referring to fighting as "dancing", using several dance metaphors throughout battle. Raian notes that one possible reason for this is because martial arts have always had a strong connection with dance and song.

In the position of an instructor, Seireitou is known to be capable of unspeakable brutality, both physically and mentally. Furthermore, he isn't very considerate of another's feelings of self-adequacy lack-there-of, portraying his signature sarcasm. It was because of this, coupled with his amazing capabilities as a teacher, that among those who have either trained under him or have heard about him as a teacher address him as the Mashōtsukai (魔性使い, literally "Demon Teacher"). According to Saori Sumeragi, whenever Seireitou says "Eh, I don't want to.", his stubborness becomes unrivaled to the point where no amount of compensation can change his mind. His role as a teacher stems from his deep respect of his teacher Shōyō Shakyamuni, and out of memory of his teacher, he values the relationship between a student and their master above all others; becoming enraged that someone who would harm their student would call himself a teacher. In the "less-platonic" sense, Seireitou has considered himself an expert on women. The truth of this is very difficult to ascertain, as he seems to understand a great deal about a woman's thoughts, but at the same time reveals himself to say and do things that are inconsistent with his knowledge. This can be seen by the way he "mistakenly" insinuated Hisaya Urogataya's statement to mean that he, her, Jacqueline and Okiko could have a foursome; responses of which often tend to lead to death-filled stares from the women mentioned, save for Okiko in that particular scenario. Regardless of this ability, he is not one to commit to intimate relationships, most likely being a result of Shiori's death and the events that transpired from it. Nonetheless, he was more than adept at sweeping women off their feet, even if it wasn't intentional. Almost contradictory of this, however, Seireitou appears to be very willing to commit perverted acts, being labeled by many as a pervert. His normal use of dirty talk, scatological innuendos, and ability to find women in unstrategical places also seem to suggest this. In contrast to this, Seireitou is often considered by many to possess a very peculiar charisma that sets him apart from all others. A unique charisma that is disguised by his strange mannerisms and ridiculous actions but has always remained true and just.

Among his hobbies, one of the ones he appears to have a consistent interest of indulging in seems to be playing board games. Whenever he is by himself, he sets up a chinese Go board, and utilizes the pieces of the individual games of Chess and Shōgi. setting up a very twisted game that combines all of the respective games' aspects. They seem to form a physical representation of all the situations occurring around him, allowing him to formulate potential plans for said situations. The rules he plays by are also beyond that of normal, seemingly standing as a metaphor for the way he lives his life. However, this could just be a dramatic implication, as when Seireitou was once annoyed by something trivial, he proceeded to kick the board at Raian's head. He also appears to have an obsession (or addiction) for sweet foods, once threatening to kill whichever one of his two students ate the last ice cream sandwich. This also seems to carry over to alcoholic drinks such as sake.

It has been noted by both Kamui and Sōkudo that Seireitou houses two different persona. The first is his carefree demeanor, which is present consistently and makes up the majority of his personality and traits. This is often characterized by his moniker, "Silver-Hairs" Seireitou. However, Seireitou also possesses the trait of a brutal and unmerciful killer, characterized by his other moniker, Shiroyasha (白い悪魔, White Demon). Sōkudo claims that these two persona are at war within Seireitou, and have been ever since the death of Shiori Miyamoto. However, despite this claim, the "white demon" persona has been depicted several times before, most noticeably during the first Shinigami-Arrancar war, when he was first given said title, and also shown whenever Shiori is brought up in a negative or demeaning manner.

History
Born to the Kawahiru Clan as the third son of the King of Souls and Tsuyuri Kawahiru, Seireitou had never gotten to appreciate the benefits of being a full-blooded member of Soul Society's royal family. An incident had caused the young child to become expunged from Reiōkyū. Seireitou grew up under the care of Shōyō Shakyamuni, and was under the belief that his parents had abandoned him, though Shōyō attempted to persuade him that this was not the case. However, Seireitou continued to think this way, and as a result, he was apathetic toward most people in Rukongai who attempted to get close to him. Seireitou was raised in a dangerous era, war and conflict being a common sight in the Rukongai districts and beyond them. The fighting appeared to not have even a single instance of any ceasing. Under Shōyō, Seireitou became part of the Shakyaryū Dojang school and studied under his mentor and father figure for most of his childhood and teenage years. While learning at the school, Seireitou eventually met Shiori Miyamoto, whom was studying under Shōyō around the same time as the former. The two, although meeting with a rocky start, became good friends who relied on eachother in tough times.

Under Shōyō, Seireitou had been taught all forms of Shinigami combat and how the four intertwined with eachother. Despite their differences, the combat styles all relied on eachother's teachings in one form or another. Once his initial training was finished, Shōyō would have Seireitou participate in missions that were in service to the warring districts. Because his experience was limited, many of his tasks were limited only to bodyguard duty and parcel deliveries. He often worked with Shiori, as they were quite the excellent team, but also had to work together with other students of Shōyō's. Senka Kururugi soon came into the picture, who's parents were nobles of the Rukongai village. Despite their interactions being limited, Seireitou and Senka began to develop feelings for eachother, to which Shiori showed contempt toward.

Before long, Seireitou had followed Shiori's example and entered the Shinō Academy, pending Shōyō's approval. At the Shinō Academy, Seireitou was admitted into the lowest class, being discriminated against as "scum of the Rukongai", along with Shiori and Raian. However, the trio proved themselves, and eventually were admitted into the top classes respectively. It was at this point that Seireitou and Raian began their rivalry, attempting to best the other in each class. Despite the two's equivocal skill in Kidō, Seireitou was able to best Raian in almost every class, earning perfect scores when Raian earned average scores. Handpicked from a class of other top students, Seireitou was assigned to receive special instruction. His sensei was Shōyō, his surrogate father, which surprised the young man, to learn that his caretaker was actually his teacher. Seireitou became even further distant from Raian when he met Madara Kawahiru, Shōyō's assistant teacher who was also the current Captain of the Ninth Division. However, Madara revealed that he was actually Seireitou's older brother during their one-on-one training. Seireitou inquired why their parents had abandoned him, Madara explaining that their parents had become involved in a civil war, and in order to protect their son, they had Shōyō take Seireitou to the Rukongai. Madara goes on to say that because of this war, both of their parents were killed on the battlefield. Seireitou soon confronted Shōyō about this, but Shōyō refused to tell Seireitou anything, and because of this, Seireitou soon began to feel detached from his surrogate father.

Seireitou held only Madara in regard from that point on, and accepted the latter as his mentor. He formed a powerful bond with his older brother, but also a bitter rivalry. Madara acknowledged the rivalry Seireitou felt, telling him, "We are brothers. I am the wall you must climb over, so you and I will continue to exist together." However, it was not long after that Seireitou began to see Madara's true colors, discovering that everything he had told him was a lie. Madara was forced to leave his captaincy under personal reasons, and confronted Seireitou, attempting to kill his younger brother. However, Shōyō came to his rescue, and chased Madara off. Shōyō explained that he didn't want to tell Seireitou the truth, because it would have devastated him. He explained that Madara, or rather Kamui, was the one who led a massacre of the Kawahiru family, and killed his own parents. Sindae, realizing Kamui's intentions, requested that Shōyō take care of Seireitou. It was later revealed that Sindae managed to drive Kamui off, and the latter disappeared completely that night. Seireitou apologized to his mentor for making such a mistake, but Shōyō forgave him. This event deepened Seireitou's despair, but ended up deepening his relationship with Shiori. Before long, Seireitou and Shiori shared their first kiss.

The years then passed, as Seireitou graduated top of his class, and was placed in the Gotei 13 as the fifth Seat of the Eighth Division. He served under Captain Nagato Hiroshitaki. He formed a close relationship with his Capatain, but eventually ended up being the victim of betrayal yet again. Nagato revealed his true identity as Myoken, and attempted to use Seireitou to kidnap fellow Shinigami for experimentation. When Seireitou refused to comply, Myoken had attempted to kill the young silver-haired man. However, the combined efforts of both Seireitou and Shiori defeated the renegade Captain, and ended up running him out of his position. Pending an invesigation, Seireitou was acquited for his charges for insubordination. With nobody better qualified for Myoken's former position, not even the lieutenant at the time, Seireitou attained the captaincy of the Eighth Division. This was because sometime before his fight with Myoken, he attained his Zanpakutō's Bankai.


 * "One hour, Sei. One hour to escape the hangman's noose."
 * "Escape? My favorite two-syllable word."
 * - Raian and Seireitou

As the new Captain of the Eighth Division, Seireitou took Shiori as his lieutenant and Setsuna Inoue as his eighth seat. Senka had attained the captaincy for the Second Division, and Raian obtained the captaincy of the Tenth Division. Seireitou and Senka's relationship began to flourish from when they were kids, but Seireitou was more of a bachelor, hitting on women all throughout the Seireitei. Things were finally at peace, as Seireitou worked with his comrades on several assignments. It was during this time that Seireitou took on six disciples, five of which would go on to found Kōmyōzankū. However, eventually, war approached. Seireitou had worked alongside his fellow comrades, including Hikaru "Shadow" Kurosaki and Sōsetsu Taneda. After almost an entire year of non-stop fighting between the opposing sides, the Shinigami were the decisive victors. Two years after the war, Shiori worked her way up to the position of the Fifth Division's Captain. The lieutenant position was open, as Seireitou appointed a man named Akujin. Even from the beginning, Seireitou had held suspicions about Akujin, not felt by his fellow Captains. However, these feelings were soon made out to be fact, as Akujin was caught red-handed by Seireitou and his comrades, undergoing Hollowfication experimentation. Akujin used this oppertunity to force the Hollowfication virus on the group, causing them all to undergo Hollowfication. Akujin was in leagues with the Fifth Division's fourth seat, Sōsuke Aizen, the latter being unknown in his involvement until later. Before long, Seireitou's group was found by the Ninth Division's squadron, and brought before the Central 46. When Seireitou was put on trial for gaining Hollow powers, he was stripped of his captaincy and sentenced to death. Just as Seireitou was about to be killed on the spot, during the execution that followed a week after the trial, Raian intervened and freed his friend, as the two attempted their daring escape. Raian led Seireitou to the outskirts of the Rukongai, where the others were also waiting. Because Raian's identity wasn't revealed, he stated that he'd stay back and keep an eye on Akujin. Now outlaws, Seireitou and his group were forced to flee to the World of the Living, not before Seireitou thanked his friend for his help in escaping.

They were hunted however, ironically by Raian's own division, causing Seireitou and Shiori to lose contact as they were forced to split off. Seireitou had not known what had happened to Shiori, as he made his way to Karakura Town. He used Kidō to hide himself, until he had crafted a Gigai that would cut off his spiritual power. He soon took up a job as a High School teacher, and settled into the life of a human. The life of a Shinigami, however, did not escape him. He soon made contact with former Captain, Shinji Hirako, a few years later. The two discussed the occurances reguarding both of their defections, only to come to the conclusion that Akujin and Sōsuke Aizen had been working together, side-by-side on the experiments. From there, the two Vizard had decided to work alongside one another in defeating both Aizen and Akujin, and clearing their names. It was also around this time that Seireitou encountered Sōsetsu Taneda once again. Seireitou had also begun to make plans to find his brother, Madara, in the hopes of making the mysteries of his past finally come to light.

Equipment

 * Hanullim's Sheath (シースされて究極の, Hanullim no Saya): Hanullim's sheath can deflect or resist spiritual energy attacks with the barrier used to contain Hanullim's power. However, it can only withstand a limited number of attacks. The sheath is capable of resisting any amount of offensive force; however, if that force is used continuously then the sheath will crack. This is why it was able to hold off Ryan's Bankai on it's own, since it was an attack that was only unleashed once, but couldn’t hold off Kamui's Kidō since he was unleashing them constantly. The sheath can also summon Hanullim to itself, as seen when Seireitou was trapped inside the cage of kidō with only the sheath. It was created from an ancient tree's bark that grows only in Asadal.


 * Mysterious Jewel: Seireitou carries a strange jewel on his person which is shaped like a diamond with an extended body, holding a lavender-purple pearl in its center. The jewel has the number one imprinted on its side, for unknown reasons. It appears that it was given to Seireitou by Kamui, but the purpose of this jewel remains unknown. Kamui implies that it is a special item held by Kawahiru heirs.


 * Reiryoku Seals: Generated by a Kidō created by Seireitou, both himself and Minato Kuramoto wear these special seals around their wrists and ankles, reminiscent to that of cuffs. These serve the purpose of sealing the wearer's internal reiryoku as well as their reiatsu, while also making the use of physical movement impossible. Ideally, these cuffs act like weights which make it nigh impossible to move unless the wearer actively cycles spiritual energy throughout their entire body, allowing them to move. However, because Seireitou is not a physical being (as his body is composed of reishi), the cuffs do not hinder his physical abilities to the same extent they do to Minato, as the latter is a human being, but still appear to limit the former's strength and speed by a significant amount, to almost one-fourth of his true capabilities. These cuffs are typically meant to seal away a massive bulk of Seireitou's spiritual power (initially being said to limit him to one-tenth of his normal energy levels). By unlocking the seals, he can release the full extent of his spiritual power. When the need for his maximum power has ended, he will reseal himself with the cuffs. After his training in Asadal, the effects of these cuffs were enhanced onto Seireitou by an unknown extent.

Powers & Abilities
"How long has it been... since I've seen him in this state? How long has it been... since my body has been struck by a fear so abyssal and encompassing as the depths of the sea? A spiritual force so exorbitant that it scorches the heavens and frightens even the clouds... The path carved by his blade, renders all of the world unto smoldering decay. Those eyes haven't changed. They're the same as they were back then. The eyes of a demon. That man who stood on the battlefield, with piercing yellow eyes and his silver hair tainted with the blood of those he killed... Whose name stuck fear into the hearts of every enemy... Shiroyasha, the white-maned demon. Kawahiru Seireitou."

- Raian Getsueikirite comments on Seireitou's Powers By his standing as a former Captain of the Eighth Division, and as one of the four Yonkō, Seireitou's power and abilities are said to be unrivaled by anyone who came before him or anyone since. During the Quincy Blood War, flee-on-sight orders were given should the enemy ever see him appear on the battlefield; even to those brave souls that dared to confront the man, the very presence of the silver-haired Captain caused all of them to cower in fear, prompting them all to subsequently attack him at once for their lives, only to end in a bloody massacre. His abilities, as of now, have advanced to the point that even Hanzei Kurokami believes that no one of the current generation will be able to surpass him, and that he has become equal to his teacher, Shōyō. Seireitou's overall power and infamous status are so great that his name alone is enough to incite terror in those whom would be considered his enemy. He proved to be so overwhelmingly powerful that without even using the full extent of his power, he was able to nearly kill several opposing Sternritter from both the past wars and the thousand-year following conflicts, stand toe-to-toe with Genryūsai Shigekuni Yamamoto single-handedly (though the elder was also holding back his full strength), and easily overwhelm multiple Captains of various generational ranges in their Bankai states with ease, leaving all those who served as witnesses in awe at his might.

Decimating Spiritual Power: As one of, if not the strongest Sōzōshin alive, Seireitou possesses absolutely monstrous spiritual power. According to Sorata Nekoi, Seireitou's reiatsu has an overbearing power which is unlike anything or anyone else in Soul Society, to the point where he even considered as something completely unrelated to reiatsu. His spiritual power has a presence which, according to him, feels as if it's trying to stifle his very existence. Koga Tensei compared the feeling of Seireitou's reiatsu as if the "weight of the skies" were on his shoulders. In terms of coloration, his spiritual energy is pure white, occasionally producing lavender bioelectrical sparks of reishi discharge, making a deep crackling noise when Seireitou focuses his energy. His body glows bright white when this is preformed, as his energy interacts with the energy in his surroundings, changing their properties in a very minimal way, most likely due to his Zanpakutō's nature. Similar to Raian Getsueikirite, when unleashing a strong enough surge of energy, Seireitou's reiatsu will often take the appearance of a fox's head. His very presence can cause even the most skilled warriors to lose their breath. During his battles in the war, Seireitou's moniker, Shiroyasha, was evident the moment the former entered battle. The sheer force of his spiritual energy raining down on the battlefield, the enemies staring on in a mix of fear and despair, as the Shiroyasha's very spiritual power would be the first wave of attack, followed by the onslaught. Allies alike would watch on in absolute shock, being enveloped in an "ocean of energy" that would surround them entirely. Seireitou's spiritual pressure has the additional effect of affecting entire areas to the point of disrupting energy attacks from enemies, as well as affecting others from seemingly miles away. Eventually, during the years following his resignation as a Captain, Seireitou's training had elevated his power to the point at which allowed him to contend with Datara Kawahiru on an equal level. Following the nineteen-month timeskip, Seireitou's spiritual power has risen further, prompting Hanzei Kurokami to compare the former to Shōyō in the latter's prime. The overwhelming levels of energy that Seireitou obtained prompted him to use special "reiryoku cuffs" to seal away a large bulk of his full power, hindering him to one-tenth of his true capabilities. Training under immense gravitational pressure in Asadal resulted in Seireitou's spiritual power levels to rise exponentially, though the full extent of his spiritual power at this point is unknown. Despite his full power being unknown to all those around him, Raian noted that his current power, with the reiryoku seals active, is almost equal to that of his unsealed energy level prior to his Asadal training. Considering that the reiryoku seals themselves have been enhanced to seal even more energy from within Seireitou after his training only hints to an absolutely god-like amount of energy that is sealed within his being by the new cuffs, waiting to be released at the moment Seireitou deems the power necessary.

Immense Strength: Perhaps due to years of combat experience and time on the battlefield, Seireitou has a very large degree of physical strength, most commonly displayed by his ability to fight back his opponent's attacks with a single arm. Repeatedly, he has shown clear evidenced of his strength from acts like kicking Hikaru through a building and slamming Ryan over his shoulder with one hand in their battle, as well as when he grabbed Ryan's sword barehanded and reeled both him and the sword in for an attack. His great strength is shown during his fights with Raian holding off bladed attacks by force alone and even battling back his Bankai's spiritual attack. He had dispatched two of his opponents with presumably little effort, both of which were presumably Captain-level. Seireitou's strength is so immense that when he threw Raian, he was unable to recover due to the air pressure being too hard on his body. With a single downward chop, he was able to snap Mashiro's sword's blade in two. Seireitou was able to effortlessly cut through the sword and wrist of Kensei's Bankai. After overcoming his despair, Seireitou dramatically increased his overall physical prowess. This is shown by the fact that he can, through sheer force, completely overwhelm the Shunkō-enhanced Raian with no adverse effect to himself and also effortlessly destroy even a fully-powered Hado #90 spell. After training in the Murinne, Seireitou's strength allowed him to completely shrug off the force of a point-blank Getsuga Tenshō by Raian, while the latter was in Bankai. According to Saori Sumeragi, Seireitou has reached the perfect balance between speed and stamina with strength and durability, having conditioned his muscles through years of unique and unusual training methods. It is because of this that he boasts such unrealistic strength, without having a large-built body. The sheer magnitude of Seireitou's physical strength is displayed through countless moments in the series, most often implied by his tendency to always hold back during one-on-one fights; when the situation demands further strength, his blows are capable of tearing through the muscles of a Shinigami's body. Releasing his "reiryoku cuffs" causes Seireitou to unlock the true reserves of his physical strength, as the cuffs restrain him to using only about one-fourth of his actual might. When this occurs, the Sōzōshin's true strength is revealed, capable of unleashing strikes with such force, they decimate anything and everything within their line of range. Even without making direct contact, Seireitou was able to tear through Mūkade's Bankai structure with ease after releasing his reiryoku cuffs.

Genius-level Intellect: Despite his laid back attitude, Seireitou has repeatedly shown himself to be a perceptive and insightful man as well as being very detail oriented when it comes to fighting. He notices his opponent's mannerisms and discerns with ease the reasons behind those actions and the weaknesses and strengths of his opponents. Seireitou has an undeniable talent for thinking things well in advance as well, make decisive and accurate decisions quickly in battle, and able to perceive any situation at hand. He generally has shown himself to also be a crafty tactician from how easily he can deceive both allies and enemies. Seireitou has a great talent for analyzing and observing everything in his presence, allowing him to quickly understand a person's pattern of thinking to better manipulate them and seemingly always be aware of any danger. He also has very good insight on people, often knowing if they are troubled or hiding something; he sometimes even knows what a person is thinking, which seems to scare Minato. Seireitou has been shown to be very observant of his opponents' abilities and powers, even going as far as to use it against them. He is highly intelligent, possessing a genius-level intellect, and is capable of devising and executing strategies with incredible speed and precision. He has also shown to be a very perceptive and analytical man from how quickly he can analyze an opponent's power and attack patterns to ultimately make them useless against him. He is able to quickly determine a person's battle style after a single glance as well. After doing this, he can quickly place himself several moves ahead of his opponent and formulate the best counter-strategies. In addition, Seireitou has shown great ability in manipulating others to do his work for him. He easily outmaneuvers and tricks Mūkade on two instances in his fight with him. Seireitou is very resourceful, able to use a wide array of unorthodox tactics to accomplish his goal. The series repeatedly demonstrates Seireitou's mental acuity; ranging from his superb skill in playing chess, to being able to deduce complex facts from a very limited amount of facts. Beliar himself acknowledges Seireitou's intelligence surpasses his own immense intellect, who has constantly shown him. During battle, Seireitou often uses misinformation, disinformation and an analytical knowledge of a person's nature to help lull an opponent into a false sense of security and possibly make them carelessly over-confident. He also takes drastic strategies to often confuse and force the hand of his opponents. Seireitou tends to second-guess everything he is presented with, though often saying that he "went with his gut feeling" during those times. Whenever Seireitou gives percentages to indicate how much he suspects his chances of winning over an opponent, such as "five percent," in reality he means over ninety percent. Although Seireitou originally gives Mūkade a low percentage indicating how much he believes he'll lose to Mūkade, in reality Seireitou is "pretty certain" that he can beat him. Raian often pokes fun at this, telling Bella Pelear that "it is difficult to predict his actions, because the truth is, Seireitou's a liar."

Unrealistic Rate of Adaptation: Raian noted that one of Seireitou's most fearsome traits is his ability to adapt to an opponent(s) at a rate that is considered almost unrealistic. It is because of this that Seireitou almost never loses to the same opponent twice, if not once. Initially overwhelmed by the rate that Mūrata Amakuni's powers were increasing, Klaus stated that it appeared as if Seireitou's own abilities were increasing at a rate surpassing that of Mūrata's, to the point of tipping the tide of the battle in his favor. Sōkudo commented that Seireitou was a monster in this regard, subsequently noting how his title of Shiroyasha was fitting.

True Hanshi Status: Renowned by many as a "teacher of teachers"...

Innate Abilities
Sparring Mode (スパーリングモード, Supāringu Mōdo): Martial art is based on deception. And one such as Seireitou, who is known for his unrivaled status in the martial arts, embodies this principle in both his mannerisms as well as his combat style. He is not inclined to demonstrate the true capabilities of his prowess, instead opting to use only the skills necessary for any particular situation. Thus, in the case of relatively inferior opponents, Seireitou lowers himself to fighting with the ability of someone who would be considered "slightly above the Captain class"; hence, the term sparring mode to indicate this level of severely reduced skill being utilized. In such a position, Seireitou uses the same abilities that a Shinigami Captain typically uses; in other words, an equal distribution of each of the four Zankensoki combat fields. He will face certain opponents using a medley of watered-down Hakuda, which relies primarily on pure brute strength as its source of power applied with precision bordering on perfection; focusing on a more physical and "mortal" means of fighting instead of using the various complex and transcendent skills and styles attained by one such as him that has achieved an absolutely unrivaled status in all of martial arts. Seireitou will also engage in Zanjutsu sword combat, as well as standard Kidō spells, the same way a Captain of the Gotei 13 would normally behave. While it is understood that Seireitou is a proponent of the ideal that rejects excessive force in conflict, the other reasoning behind the Sparring Mode is that it enables him to essentially avoid allowing others to examine and witness those thousands and thousands of martial arts that should not be seen nor experienced by the average challenger; it is not uncommon, after all, for a Grandmaster of a craft to maintain secrecy of his true capabilities. However, Seireitou has neither confirmed nor denied this assertion, though his attitude would suggest that this is indeed the case.

"The True Seireitou Kawahiru" (真の河昼精霊塔, Shin no Kawahiru Seireitou): While no name actually exists for this phase of combat, this is the term coined by Micythos when facing Seireitou in a one-on-one serious confrontation. It is when Seireitou abandoned the unnecessary fields of combat and devotes himself in battle entirely to his martial arts. In many cases, the transition from Sparring Mode into his "true state" is often displayed by the removal of his white haori jacket and sometimes the disarming of the swords fastened to his hip, casting them off as he also releases his spirit cuffs, thus releasing the full extent of his power and ability; in both physical and spiritual strength. The other combat fields are subsumed under Seireitou's Hakuda, serving as expansions and unique expressions of his unrivaled martial arts.

Legendary Hakuda Grandmaster
Among the four Yonkō, Seireitou is known as the respective master of Hakuda; the Shinigami system of hand-to-hand combat. Even among other Hakuda master-class Shinigami who have consistently shown extraordinary feats of strength and speed throughout the series, Seireitou still stands in a class of his own when it comes to hand-to-hand combat, defeating those kind of aforementioned opponents with strict ease. His unrivaled level of hand-to-hand skills has allowed him to truly be named a "Grandmaster" of this field. It has been said that Seireitou has taken the prowess of Hakuda to plateaus that have transcended the boundaries of previous theory and concept; becoming an embodiment of Hakuda that is unsurpassed in every and all martial arts. With respect to this, Seireitou has been named the one and only Legendary Master of Hakuda, therefore being the current holder of the title, "Greatest Martial Artist in the World"; a status sought after by many.

General Hand-to-Hand Prowess: Though he hasn't shown the full extent of his abilities in this field, Seireitou has shown to rely mostly on martial arts, rarely drawing his sword at all unless he deems a need for it. Even as a small child, he was able easily defeat several adult Shinigami without even a scratch, despite having only began his training under Shōyō. This implies that, despite all the work he had put into his martial arts, he has always had a natural talent. Seireitou also seems to prefer applying an "off-the-ground" method of combat, often being seen attacking opponents from aerial standpoints, but will commonly resort to stationary attacks that allow him to wipe out an opponent without warning. He has been shown to take down nearly fifty Onmitsukidō members with only Hakuda. He has been shown easily taking on the likes of Espada-level Arrancar as when he brutally defeated Xerxes Averian, whilst in the latter's Resurrección state, and is subsequently regarded by Almayo Vinas as highly dangerous. He can catch the attack of a Captain-level opponent with strict ease, making someone of that level look like a beginner when compared to his skill. Seireitou is also capable of delivering powerful blows that can smash through Espada-level hierro and block every single one of the multiple punches and kicks from several highly-skilled opponents. As of more current chapters, Seireitou seems to have foregone the need for a blade, relying solely on his martial art ability. He is capable of ending fights rather quickly, using only his expert timing and powerful arsenal of kicks and hand strikes. Saori Sumeragi has stated in many instances that Seireitou's hand-to-hand abilities make him appear as a "blade"; swift and agile, with no wasted movement, which makes it impossible for any opponent to find even the slightest of openings or instances of weakness in his martial art attacks. Raian, a fellow Yonkō, noted that Seireitou's level of hand-to-hand skill and capability makes fighting him at close range no different from suicide. Despite the seeming recklessness of his actions, Seireitou is able to remain focused enough to not lose his edge in battle, but rather enhance his already formidable prowess. Even against Mūrata Amakuni, a senior member of the L'Obscurité, he was able to defeat and ultimately kill (albeit unintentionally) the warrior despite the grievous wounds he received from him, which is a testament to his skills. According to Raian, he does not depend on emotions such as anger but rather reveals these emotions in order to "put his opponent's heart off-guard and strike back without mercy". Raian often noted that Seireitou's most fearsome attribute in his Hakuda was neither power nor technique, but rather his unrivaled tenacity. This was best shown during his fight against Noriaki Shiba, allowing the latter to deliver a killing strike that would have normally annihilated anybody else and suffered several life-threatening blows, in order to set-up his positioning for a decisive strike.

Hyper-Speed Combat: Even without the use of Hohō, Seireitou's body movements appear as mere blurs, if anything else. With his arsenal of kicks, strikes, punches, and throws, Seireitou's speed at the utilization of these aforementioned techniques is nearly god-like. Most opponents are unaware that Seireitou had carried out his technique until they become aware of the damage that he has wrecked upon them. Because of this, Seireitou's Hakuda speed allows him to even take on users of Bankai one-on-one, while still appearing to have the advantage. The speed at which Seireitou attacks is unprecedented, as a single punch from the viewpoint of any other opponent can conceal nearly a hundred hand strikes simultaneously. With incredibly agile and quick footwork, contending with Seireitou in any form of hand-to-hand combat is usually a short bout in which the challenger is utterly overwhelmed and defeated. This sort of speed is very useful against multiple opponents, allowing Seireitou to effortlessly wipe out a battalion of warriors in no more than a split second.

Master of the Martial Arts: Seireitou models his Hakuda styles with martial arts that he had mastered during his training session and experiences throughout his long life. Among his more common uses of Taekkyeon and Taekwondo, his martial arts knowledge extends to the martial art form of Bāguàzhǎng, as well as a medley of other martial arts that he has mastered but are rarely seen in combat. Martial arts such as traditional Jujutsu and Karate, among many others, are no exception. In being the Grandmaster of Hakuda, Seireitou has mastered all of the hand-to-hand combat styles as well as all of martial arts in their entirety, though a majority of this knowledge is suppressed into his subconscious along with his Shiroyasha persona, due to the lethal nature that they all carry, keeping only a few hundred or so styles to his conscious awareness. Seireitou prides himself in being a martial artist of the "old" and the "new", having mastered long lost art styles that many have even barely heard of, let alone have seen or learned. His skill also carries over to the medical field as well, his intricate knowledge of pressure points and bone joints allows him to preform bone setting and acupuncture with minimal effort. It is stated by Noriaki Shiba that a master of Seireitou's level is capable of closing in the range of his attacks, and then extending the range at almost instantaneous instances. As such, he can effortlessly extend or minimize the range of his attacks, making it nigh impossible to catch him off-guard. Likewise, he is capable of shifting his fighting style between hard and soft styles almost instantly. Having been training Minato Kuramoto to better adapt to seemingly any situation, Seireitou has showed himself accustomed to countless fighting styles and techniques, stemming from basic but outlawed techniques to highly-advanced ones. This is shown by his capability of turning many seemingly basic techniques into fatal one-shot attacks, such as when he used Front Kick, it was able to completely crush the ground beneath him, as well as generate a massive shockwave of pure force in the direction of his opponent, which shocked Minato greatly. Martial arts is the act of mastering the control of one's body, and Seireitou's control over his body is so great that he is capable of twisting his body and bending his legs in ways that would surprise many Hakuda martial artists, among even Captain-class Shinigami. Likewise, acrobatics are not a difficult thing for him to accomplish, making both of his students doubt he is even a real person, or even maintains a solid form, whenever he demonstrates these capabilities. He is able to effortlessly tighten his muscles to make his body as tough as steel while allowing himself to remain relaxed enough to breathe and move his limbs and body effortlessly, doing so at speeds so great that it can be accomplished right at the instant an opponent's attack nears his person. In addition to this reserve of never-ending knowledge of techniques, due to his years of experience, he can copy any move of a master-class fighter, no matter how unique it is to the opponent, which has helped in the development of his one hundred and eight secret techniques.

Modern Martial Arts
 * Taekkyeon & Taekwondo: Generally his main martial arts, Seireitou teaches this art at the Kawahiru Dojang; being a world-reknowned Grandmaster in the World of the Living and the Reikai in this particular martial art. While bearing two different names, they are essentially the same martial art. Taekkyeon is the predecessor to Taekwondo, and specializes in circular kicks. Utilizing his brand of "off-the-ground" fighting, he normally uses these circular kicks in addition to his immediate changes in momentum in order to deal surprise attacks added with an immense burst of strength and speed that supplement the already massive force generated by his own muscles. One of the most impressive feats of his skill is that he was able to break through sekki-seki stone with very little effort. In essence, Seireitou's kicks are capable of breaking bones and destroying joints effortlessly, tearing through substances such as concrete and steel, and can be used to block the swing of an opponent's sword, subsequently knocking the blade out of their hands by aiming for their grasp or their wrist. In Taekwondo, kicks and strikes are generally more straight-forward, and Seireitou's ability to switch from Taekkyeon to Taekwondo is a direct result of his hard-to-soft and soft-to-hard capabilities, as they are essentially two sides of the same respective proverbial coin. Both styles emphasize the uses of kicks, and because of this, Seireitou can also use his legs to block incoming attacks, only to counter with lethal pin-point attacks.
 * Subak: The most primitive form of Taekwondo, which preceeds even Taekkyeon, is Seireitou's secret Hakuda weapon, used only when he is pushed to life-threatening extremes. Being such an old art style, the exact nature of Subak is unknown, as even among other Taekwondo masters (of both Shinigami and Human) have scarcely heard the term, let alone aware of any of its techniques. Seireitou tends to only practice the style when he is alone, usually at night, and doesn't appear interested in passing on its secrets to Minato. He made it clear, however, that Subak is a style that is not suitable for "sparring", implying that it is meant to kill. Seireitou has revealed that Subak, like Taekwondo, contains many types of strikes and kicks, but exists a particular way unique to Subak that proves to be extremely effective against a target's body structure. Even against muscles that are honed to almost god-like proportions, prompting them to be physically immune to strikes, there are techniques that allow the muscles to be "side-shaken", dealing damage that is great enough to rip the muscles in question apart effortlessly.


 * Bāguàzhǎng: Utilized more as a defensive style of his, Seireitou holds a grand amount of Bāguàzhǎng mastery. Dealing in the strict use of free-jointed circular movements, the steps of Bāguàzhǎng are often very unpredictable, and in when used by Seireitou, make it near impossible for an opponent to land a strike on him. In Bāguàzhǎng, footwork is key and when used to its highest levels, can allow the user to enter into an opponent's "blindspot" (殺し, Korui), something that is very rare for any hand-to-hand combatant to develop. Seireitou has demonstrated his mastery of this ability to Minato by moving through a large crowd of people and not once was his presence registered by a single person. Seireitou uses the footwork of Bāguàzhǎng to generally set up for a Taekwondo kick or even a Jujutsu throw. Bāguàzhǎng also deals in internal damage to an opponent, via the pressure point system of the body. Seireitou will also use the hand techniques of the martial art to deal internal damage to opponents through this method, allowing him to damage the organs of an opponent's body, while altering their spiritual energy flow; for better or for worse, depending on the situation. In one instance, he was able to strike the wrist pressure points where spiritual energy is focused in every Shinigami, sealing it which resulted in the internal explosion of the victim. As mentioned before, Seireitou uses these capabilities for healing purposes as well; focusing on acupuncture primarily. Circular movements also apply to the user's arms, in which a master-class martial artist such as Seireitou can control the radius of his reach with these circular techniques, which combined with his self-created Seijūken technique, allows him to instantly block, redirect, and counter an opponent's attack, all within the time span of a single breath. The speed at which he can move his arms is also incredible, to the point that it sometimes gives off the illusion of him possessing multiple limbs. These circular techniques are often combined with Taekwondo's linear-based kicks and strikes, making for an nigh invincible and effective combination. Bāguàzhǎng, in itself, is considered to be the "Kidō Martial Art" by those who see it in action and observe its effects. Seireitou has often stated that the very essence of martial arts is to examine, understand, and manipulate the "flow" of energy between opponents and between the fighter and their environment. Essentially, that energy is always in movement and is moving both around and through living beings as well as inanimate objects and surroundings. When a fighter is able to translate this understanding through their martial arts, then they have truly become masters. However, for most, it is impossible to actually control this "flow" of energy and that most internal martial arts work to exploit the weaknesses of an opponent's flow. However, through Bāguàzhǎng, Seireitou is capable of completely altering and affecting (possibly even disrupting) the flow of energy in the air around him through the use of his Hakuda. By aiming for key meridians of the opponent's body, via palm thrusts, Seireitou can alter the course of energy flowing around the opponent and through the opponent, essentially weakening their subsequent counterattacks or chances of continuing the fight. By doing so, the effects that can occur can end up weakening the joints (affecting flexibility) or causing a disruption in their internal and external energy patterns (such an action can cause one's spiritual energy to surrender to a stronger, more resolute one, making an opponent's attacks unable to cause damage, and even disrupt their ability to gather spiritual energy, such as the case of Quincy). Many other effects are possible based on how the flow of energy is altered, dealing in various results.
 * Jujutsu: Exclusively a soft-type martial art, Jujutsu is an art that specializes in joint holds, throws, and locks. In addition, it is a method of close combat in which one is trained to defeat an armed opponent in which one uses no weapon. The techniques of Jujutsu allow Seireitou, when one considers his master-level ability, to effortlessly manipulate the joints of a target's bones. This can be used to either break an opponent's joints, thus dislocating certain joints such as the shoulders and knees, at close range. This is demonstrated by a "bad habit" he has of dislocating an opponent's wrist whether they place their hands on him, often warning Minato to never sneak up behind him and tap his shoulder. However, even when this happens, he can effortlessly realign the joints with a simple flick of his expert technique. In addition to this, Seireitou mentioned to Minato that there exists a Jujutsu technique that allows one to throw their opponent without laying a hand on them; a claim which was considered far-fetched by the former until Seireitou revealed the attack's authenticity during a fight with Saiga Ūtakata Unlike the linear kicks of Taekwondo or the circular footwork of Bāguàzhǎng, Seireitou's Jujutsu seems to be on a level of its own. Despite being a soft-type martial art, the methods of which Seireitou manipulates (usually which results in joint dislocation) the bone joints can be seen as brutal while having a swift elegance. Even what may appear as a gentle tap to an opponent's ankle covers up the true incident of the bone snapping in two because of a forceful attempt to dislocate the ankle joint. Regardless, his technique is flawless, and can even predict the exact location at which he breaks the joint. Circular motion of the arms is often used to wrap the arm around an opponent's limb in order to subsequently break it or to throw the opponent. However, it is rare for a Jujutsu master like Seireitou to attack first using these techniques. In fact, Seireitou utilizes his Jujutsu abilities as a counter-attack to an opponent's own strikes, despite his rare tendency of violent dislocation. These traits of his Jujutsu make allowing Seireitou to grab hold of a limb a hopeless situation, with Raian commenting that the fight was over the moment Seireitou took hold of Kizaru Mōji's arm. However, this is merely the physical level of Jujutsu. Its true purpose in manipulating the direction of a target's force is redefined in many ways when in the hands of a Grandmaster. Whether Seireitou's limbs are being utilized or not is a meaningless gesture, it is the pure expression of will that makes this art form so efficienct at its transcendant level. The air and winds around Seireitou become tools, as if he were wielding them as weapons, but it isn't in any way limited. Even the oceans and seas that may surround him, the rocky terrains, and the heat itself that illuminates the plains by the Sun, became tools that act in accordance with their director. This is the truest expression of Jujutsu, the "gentle technique", as its Grandmaster merely alters its intended purpose and direction onto whatever form he wishes. Its prowess is limited solely by what resources are made available to Seireitou, though it is foolish to assume he will ever run out of weapons, as the entire world is his weapon.


 * Torite (捕手, "Catching Hand"): Being a sub-discipline of Jujutsu, Seireitou has shown himself to be a true master of the Torite technique. Appropiately named "catching hand", the Torite is a technique that allows for a martial arts master to deflect and catch actual weapons. With a skill level like Seireitou, the Torite becomes great to catch the blade of even most Zanjutsu masters. It was professed by Seireitou that only Raian Getsueikirite, or those at the latter's skill level, can actually utilize sword techniques that are effective enough to make Torite useless. The idea of Torite, or rather his use of it, works according to the method at which Seireitou uses his hand or fingers to catch onto an opponent's sword. Using a single finger to block the strike of a sword is one of his favorite uses of Torite which is similar to the feat accomplished by Sōsuke Aizen, though it far outclasses Aizen's version in that it does not use raw strength whatsoever. In reality, Seireitou allows his finger to act like "a rock in the river", allowing energy to circle around it without any harm befalling it. By his immense comprehension of energy and force flow, Seireitou causes the entire force behind the opponent's sword attack to essentially move around his finger and escape from the opposite end in the very miniscule instant that his finger and the opponent's blade come into contact; that very instant. In this sense, at the very nanosecond that his finger and the blade make contact, the force behind the blow has completely abandoned the sword strike, meaning it has returned to a state of rest, making it child's play for a man of Seireitou's strength to hold the blade's sharp edge with his finger. No matter how much force may be behind the strike, Seireitou will be able to stop it with a single finger using his unique Torite method. Therefore, the only conceivable possibility to actually strike Seireitou with a sword strike comes down to pure skill, not strength nor motion of the swing. However, Seireitou comments that the more strength is behind the sword swing, the easier it is for his Torite to deflect the attack effortlessly, even if the swordsmen in question is of master-class skill. Therefore, attemting to strike down Seireitou with a single sword technique is virtually impossible and must require a combination of masterful timing and master-class skill level in order to land a contact blow. Seireitou has shown himself capable of blocking hyper-speed sword strikes, ranging from slashes to pierces, using only his one-finger Torite technique. However, when applying his neijing mastery to his Torite sword catching techniques, he utilizes a full-hand catch of the blade. Once he does this, the force of the sword slash does not "circle" around Seireitou's hand and escape from the sword but rather it reverberates at the point of impact. It is likened to Seireitou's Kaerikotsu defensive technique in that neijing energy then storms the blade from the spot where Seireitou stopped the sword slash, causing the entire sword to shatter into small pieces of metal.

Original Arts
 * Hapki (합기 (ハップキー), hapuki; Korean for "Joining Energy", Japanese for "Coordinated Power")
 * Koppō (骨法, literally "Bone-Breaking"; also translated as "method of using the skeletal structure"): Old as the mythology of Japan itself, Koppō is an ancient and destructive form of the original Hakuda arts that has branched off into multiple obscure modern forms while also becoming prominent in many of the well-known art forms. Many whom are aware of Koppō's existence note that it serves as the "backbone" of all martial arts, due to body posture and structure being all developed from these teachings. In its most simple terms of understanding, Koppō is a martial art that focuses on attacking the core of the threat. On a physical level, this can be understood as attacking the target's skeletal and nerve systems, rendering their body useless and inert. The principles of Koppō lie in pressuring and eventually destroying the framework that holds any structure together. All things have a frame which allows it to exist, despite if they should be physical or mental or even spiritual. Koppō is a martial art that will destroy it outright no matter what it actually is so long as the martial artist can utilize its principles successfully. The actual movements and techniques of Koppō are never superfluous; rather simplistic and straightforward as they seek to finish the confrontation as quick and efficiently as possible. Koppō maximizes damage, pain, and stress, obliterating the target's proverbial skeleton while preserving the user's own power and stamina. Ideally, one eventually views the opponent as nothing more than a framework with points that must be struck in order for its entire structure to be rent asunder. Miyamoto Musashi noted it best when he stated that all things collapse, no matter what they are, given that one manages to disrupt the rhythm that maintains their hold. However, Koppō is far from something as gentle as mere "disruption", as its goal is the total destruction of the framework and subsequently the structure itself. It is impossible to simply preform the Koppō technique and hope to achieve the desired result. Koppō is a style that requires an advanced discipline and spiritual refinement, which combined will allow a user to learn to strike an opponent's internal framework without needing to expend actual force onto their body itself. However, the true strength of this martial art is not limited to the physical. Through mastery of Koppō, one is capable of implementing its philosophy onto the realm of the mental and spiritual. However, it is only through a master of Seireitou's status that such a realization is ever brought to its highest degree and application; to the point that it has transformed and transcended into a weapon of pure destruction that exists as an unstoppable force of nature in its own right. Being Koppō's "rightful grandmaster", due to the aforementioned feats, Seireitou can apply the philosophy of the martial art in all realms. Without even needing to analyze a target's body, due to having an incredible unrivaled knowledge of both physical and spiritual bodies of various beings, Seireitou can instantaneously crush an opponent's bones to absolute dust, rendering their limbs moot as they collapse into a pool of their blood and cartilage without causing any actual harm to their outer body, no longer possessing any frame to hold everything together. He can even deliver strikes that can destroy the spirit energy flow points, such as the Saketsu and Hakusui, sealing away the power of a Shinigami or Arrancar. Even the Zanpakutō themselves shatter before Seireitou's Koppō, for even blades and weapons possess a frame which can be exploited and then attacked. Warriors are unable to actually enhance their bones' durability because it simply isn't something that can be improved through any method of training, making it quite impossible to actually defend against Seireitou's unrivaled and masterful Koppō. It is highly suggested one not tempt fate by trying to resist the Koppō's physical assaults as it is quite literally suicide to do so. Attacks themselves can be broken apart through Koppō, whether they be physical or spiritual techniques, as even such things have a frame which allow them to exist in a refined form. It reduces everything onto total chaos, causing everything struck by its techniques to lose its order. But as it was aforementioned, it is not limited to physical feats. Even illusions are structures; mental constructs designed to alternate and redirect the mind of its intended target(s). His Koppō can eliminate illusions by attacking this framework which allows it to function, causing it to be dispersed and effectively diminished. The true danger is that Seireitou can actually use Koppō to produce illusions and hypnosis onto the target by striking their "mental framework" through his will alone. He can impose the same effects as an illusionary technique though doing so will unavoidably result in the total destruction of the target's mind; the Koppō actually "mind crushing" the victim. However, this is something that can be more properly trained to defend against in comparison to Koppō's physical applications due to many warriors being able to actually strengthen the frames of their mind through mental fortitude such as meditation; the Jinzen being a prime example. Souls themselves can be broken and torn apart through Koppō in a similar manner as a mind can be. Those souls weakened by doubt and lacking resolve can not hope to stand against Serieitou. It is because of how destructive and lethal Seireitou's Koppō can be that he refuses to teach any pupil its secrets. Should it ever fall into the wrong hands, it could mean disastrous ends for thousands of innocents.
 * Huàn Shǒu (換手 (手を変える), Huan Shō; Chinese and Japanese for "Changing Hands"): Not Yet Revealed
 * Shinuchiken (心打ち拳, "Fist of the Heartbeat"): While it has been only mentioned by word and has yet to be seen in actual use, Seireitou describes this style as the pure definition of striking the opponent's heart, which is a core ideal in his Hakuda. However, despite not having been truly witnessed, the Zanjutsu technique "Kokorozan: Raikiri", another of Seireitou's own designs, utilizes the Shinuchiken's concepts for the purpose of combat.

Self-Invented Arts
 * Shōin Style

Master of the Empty Force: Under Construction
 * Muken (無拳, "Empty Fist"; literally "fist of nothingness"): Reserved only for those whom have reached the absolute pinnacle of Hakuda, there exists styles of such a combat field that allow for actions that are "beyond the physical". Those who reach this level are known to have ascended beyond the realm of standard hand-to-hand combat and have reached a precipice far beyond standard comprehension. No longer do their movements become restricted by physical limitations, nor by any form of distance, nor their techniques by logic, as they completely abandon causality. In doing so, the warrior no longer becomes a simple fighter, but a weapon of force in its purest sense. He is the embodiment of an army, taking the form of a single man, turning any form of confrontation into either a massacre, genocide, or a war; perhaps even each of them in a single instance. Having disregarded cause in and of itself, the Hakudaka is capable of producing techniques without the actual need for physical engagement of the opponent(s). The attack truly occurs, the block truly occurs, the joint lock truly occurs... but also does not. The Hakuda Grandmaster needs not to undergo the cause behind what his attacks can do, as now there only exists what the technique is and the end result of unleashing it upon an opponent. Seireitou explains that it is the act of materializing one's will to "strike", the attack crushing down and tearing apart any and all opposition that should meet Seireitou's perception. Anything that can be interpreted as an attack can be blocked and anything that is a target will be annihilated without prejudice. The empty fist knows only to do as Seireitou wills it to, allowing him to crush the forces of any substance, be it even an element of nature itself. Even illusions can be broken and hypnosis shattered by the Muken, as even Kidō cannot hope to stand against it in overwhelming superiority as it is normally accustomed to. He can even tear apart a Haien in the form of a massive wave of flames without fear of its great heat, as the heat that the spell emits, just as the actual flames themselves, suffers total destruction at the hands of Muken. Those of similar skill class are capable of perceiving the attacks, to some degree, but to most opponents, it would appear as though the technique had occurred without Seireitou actually having preformed said technique; at least, to their knowledge.
 * Hōkōryū (方向流, "Directional Methods"; literally "method of direction"): Everything is energy, whether it may take the form of sentient beings, nonliving materials, the supernatural, or even the intangible substances such as thoughts themselves. In the soft-style martial arts, the use of redirection, manipulation, and overall avoidance is strictly emphasized of the opponent(s), whom of which may be considered simply a form of energy to the eyes of the martial artist. Therefore, it is possible to apply these teachings in a manner similar to the concept behind the Muken art, allowing a being of Seireitou's ability to move beyond the physical and preform absolutely mysterious and mystical feats. To the untrained eye, one may assume he is utilizing a form of Kidō, but rest assured, it is still Hakuda that is being expressed. Without requiring any form of actual physical contact, Seireitou can actually provide "direction" to any form of energy that he may deem. Be it the physical strike of an opponent, an attack of spiritual means (Kidō, Cero, et cetera), or otherwise, Hōkōryū will allow for the projection of Seireitou's martial will, resulting in the application of such techniques of manipulation. Aikido teaches the act of avoidance, aiming to take advantage of timing and footwork to use an opponent's movement to not only dodge an assault but to assume a position that can be deemed the most beneficial. Jujutsu teaches the act of manipulation. Even when confronting an opponent of seemingly great danger, such as one weilding a weapon when the martial artist is unarmed, this style teaches techniques that will for besting the opponent in any possible manner; disregarding, at times, moral sense entirely. Without a doubt, all of these teachings and those that follow similar traits (in other words, any form of soft martial arts) can be used through this mysterious method of materializing the will to "throw" and/or "redirect", among others. In truth, the art of Hōkōryū stands to be the "evolved" form of all soft-type martial arts. Seireitou describes the feats produced by Hōkōryū by first explaining that all forms of energy function by following a path; in other words, everything operates by the rules of the energy flow of which it naturally exists within or has been willed into. His will literally materializes into a "flow", providing a new path for the energy to follow. The act of doing so allows for a variety of abilities on the user's part. Seireitou can intercept energy attacks without a single physical motion, causing it to completely change course from striking him to being redirected according to his whim. It is also possible to even absorb the energy within him, literally causing the flow that his will materializes to move within him and to become "trapped", allowing for some form of either present or future use; symbolizing the concept of joint locks. When using Hōkōryū against an attack produced by, for example, a Grandmaster of Kidō, it quite literally becomes a "tug-o-war" between whose will maintains dominance over the technique; a struggle which can have disastrous effects to the battlefield between and around the two or more combatants.
 * Saiteigi Hyōmei (再定義表明, "Redefined Expression"): Born out of the art of Hōkōryū...


 * Seikeiryū (整形流, "Shaping Methods"; literally "method of shaping"): Not Yet Revealed

Master of all Jing


 * Neijing Mastery: Having trained under all of the chinese martial arts, Seireitou has attained an almost unrivaled understanding of the nèijìng (內勁, "internal exercises") concept. Because of this, he has attained knowledge of several powerful techniques that apply the "vibrating fist" concept in their usage, in addition to having developed many of his own. The "vibrating fist" does not involve using physical force to deal damage, but rather uses an internal energy that is concealed within external explosive force in order to deliver strikes that can shake up an opponent's internal organs and muscles. In essence, at the point of contact of the external strike, the internal energy is focused to fan out from that point and spreads outwards into the target. The result is not based upon the damage that the initial strike would normally cause on its own, but rather that the target is demolished into minuscule pieces due to the vibration of the internal energy fanning out from that external strike. This particular form of internal energy is considered "neijing energy", which is generally developed through ki being directed by one's willpower, and unlike physical force which can decrease with age due to muscles deteriorating over time, neijing energy proves itself to continue becoming stronger as the years pass. In Seireitou's case, the combination of the initial external strike and the fanning of the neijing force makes these particular techniques life-threatening to almost any sort of opponent should any one of them make direct contact, tearing an opponent's body apart and rendering them a mess of blood. In order to prevent this, in most cases due to following the ideals of katsujinken, Seireitou abandons physical force in the initial execution of the neijing technique, utilizing only the internal energy that vibrates through the opponent's body in order to devastate the body of the target without causing their body to violently tear apart. Against Blut Vene, especially, the use of even a weakened version of a neijing attack is suicidal, as being struck by one whilst using the defensive Blut will cause every single one of said user's blood vessels to rupture violently. However, even by doing this and diluting the amount of internal energy that Seireitou employs in his technique, these neijing attacks are still far too lethal to be used in sparring and thus are only utilized by Seireitou against opponents he has sworn to defeat.


 * Hakkei Mastery: Though commonly mentioned in the practices of neijing, which utilizes internal energy, there also exists Hakkei (脂肪強, roughly translated as "explosive/raw power"). It is often practiced in Karate through the training method of sanchin kata. The purpose of Hakkei is to allow the fighter to use their energy in an explosive manner with the least amount of actual physical movement possible. In essence, it is the "strike without striking", causing the muscles within the body to actually generate the energy and deliver the force of the attack without actually carrying out the attack. In doing so, Seireitou can attack with immense force even if he is extremely limited in space, allowing him to attack with great strength no matter the situation. By merely tapping the opponent's arm, he can cause his explosive energy to generate an attack and crush the joints despite the fact that, to the untrained eye, Seireitou did not preform any sort of technique.


 * Sakki (殺気, "Thirst for Blood"): Otherwise known as "killing intent", those who find them capable of emitting such a force are often among the elite whom harbor immense power and strength with the intensity to rival it. It is imbued into their spiritual pressure and is transmitted into their opponent, instilling them with a sense of fear and dread. In weaker foes, it can tempt them into making a move or even to make them believe as though the castor has already attack, causing them to lower their guard. In some cases, it becomes so intensely worked into them, it can be mistaken for some form of illusion or hypnosis. To these warriors, Sakki is but a ploy designed for the purpose of faking out an opponent. But in the hands of a Hakuda Grandmaster, such as Seireitou, it becomes its own weapon entirely. In his own words, Sakki is not just the intent to kill, but the very will to act. By developing the ability to materialize this intent, the Sakki itself can become a weapon with an almost unlimited arsenal of techniques, just as the Empty Fist itself is the result of striking an opponent through the projection of their will alone. In this regard, Sakki is no longer a ploy to cause his foes to become enthralled with fear over feeling his desire to inflict harm upon them, but instead actually materializes this "desire" into actual effect. It can actually be applied for various other methods as well. Sakki itself can be seen as manipulating the opponent into believing whatever the attacker wishes them to believe. But in such an advanced version of the concept, it can be used to actually assume control over weak-minded beings. Fear can motivate and control those who allow it creep in their hearts. It serves as an involuntary tool that can force those to act in a manner their calm and logical minds would have advised them against doing. While it can be blocked against and/or even resisted by those with a strong will themselves, the Sakki used in this manner is extremely effective and can be used on a large scale; limited solely by the perceptions of Seireitou himself. Therefore, given this much, it is highly presumed that Seireitou could use Sakki alone to contend against his opponents if he so wished.
 * Clone Creation: The intent to kill can, in normal circumstances, force an opponent to believe as though they've been attacked by the one who emits the Sakki. The opponent quite literally hallucinates that the attacker has made their move and is standing in front of them, executing their assault. However, once they regain focus, they can see that it was merely a product of their own imagination. However, Seireitou takes this several degrees beyond that and literally creates this belief into reality, generating full-bodied clones of Seireitou himself, complete with the entirety of his capabilities. They appear to be real clones, as they can bleed and be physically punished from assault while maintaining their form; as if they were real living beings themselves. In the most simplest sense, the clones Seireitou creates are essentially "detachments" of his own willpower, assuming the form of his intent to act against his opponent(s).

Martial Art Conditioning: In all of Hakuda, before one may learn techniques, one must develop a foundation within their own bodies. Through a constant repetition of these, one may gain a degree of strength, durability, and internal balance; among other traits. Before long, it becomes routine for them to engage in these exercises. However, for those that have achieved a superior level of proficiency in the martial arts, such as Seireitou whom has ascended to the precipice of Grandmaster, these exercises become aspects of the warrior's very nature. They become something beyond the normal. Instead of becoming a routine, they actually become the strengths of the martial artist; standing to be powers of their own accord that the martial artist uses to access some form of benefit.
 * Tao Yin (導引, Chinese for "Guide and Pull"): Not Yet Revealed
 * Qìgōng (氣功, Chinese for "Life Energy Cultivation"): Not Yet Revealed


 * Tiězhǎng (铁掌, Chinese for "Iron Hand/Palm"): Not Yet Revealed
 * Tiěshān (鐵衫, Chinese for "Iron Shirt"): In reference to its very name, the Tiěshān is an exercise in which the practitioner conditions their body to become durable enough to resist an enemy's attack without succumbing to serious injury, if any at all. However, Seireitou has transcended the properties of his method of Tiěshān, to the point that it has become something as powerful and mysterious as the ancient martial arts themselves. He is like a piece of metal itself. Resilient and impenetrable, Seireitou's defensive technique is so great that it is almost impossible for any blade to cut through it nor to pierce it. He can withstand being struck by the well-executed swing of a sword without yielding any form of damage, even if he is dealt repeated attacks from all sides. Seireitou can go so far as to block the bladed assaults of his opponents with his bare hands, as if he were actually engaging them with a sword himself. His skin also takes on selective properties of metal, to the point that attacks composed of lightning are essentially useless against him and it also allows him to withstand heat to a far higher degree than even the strongest of spiritual beings would be capable of. This defense is often likened to the Arrancar's hierro, which compresses their reiatsu for the purpose of providing them with a hardened skin that'll protect them from enemy attack. However, the difference that exists in this technique is that Tiěshān itself has become a technique of mystery in and of itself. It is as if the very will of Seireitou as a martial artist is what protects him from the attacks of his foes. Combined with Kaerikotsu, it renders Seireitou nigh invulnerable to all methods of attack.
 * Chánsī (纏絲, Chinese for "Silk Reeling"): Not Yet Revealed

Development of Stances: Unlike the undeveloped form of Hakuda, if it may still be called such, used by low-ranking Shinigami that deal in simply attacking an opponent using the arm or leg, those who rightfully deserve the title of "Grandmaster" within the field of Hakuda emphasize the use and development of the stance. A stance is essentially the art of distribution, foot orientation and body positions adopted when attacking, defending, advancing or retreating. While most of his stances are strange and unique, not seen often by other Hakuda masters, he doesn't appear to have names for all of them.
 * Tenchi Jōge (天地球逆様, "Heaven Earth Upside Down") is the Nakanisentō stance of "offensive annihilation". By positioning one arm near the chest and stomach, and the other at near eye-level, both palms kept open, the user compresses their spiritual pressure completely, in order to make each of their attacks result in fatal damage. While not seen being used by him, Seireitou is credited with the creation of this Hakuda stance, and eventually passed its teachings on to both his son and Minato Kuramoto. It is through this stance that he initiates his Jujutsu attack usually. It is common for Seireitou to enter this stance prior to using Sokotsu against an opponent.
 * Maeba (前翼, "Front of the Wing") is the Sotosentō stance of "absolute defense". Both arms are placed symmetrically in front of the user's body, the palms flattened and held upwards, as if being centered to hold something. What makes it an "absolute defense" is unknown, as Seireitou was interrupted before being able to show its capabilities by the untimely appearance of Saiga Ūtakata. Kamui is the one credited with the creation of this stance, and it is presumed Kamui taught Seireitou this back during the duo's time in the Seijin Council. When used against Hōsen Kuramoto, its true nature is revealed. Combined with the neijing concept, Seireitou uses his open hands to divert away the force of an opponent's physical attacks. By twisting his arms inward and outward, the subsequent motion causes his open palms to follow with that and causes all direct enemy attack forces to be diverted off into various directions. In this sense, Seireitou does not meet power with power but rather expends no energy at all, merely causing an opponent's strikes to bounce away and miss entirely, making them feel as though they are succeeding in tiring out Seireitou, but rather they are wasting their own energy. In this sense, Maeba is the ultimate defensive stance against another master of Hakuda.

Immense Repertoire of Techniques: While Seireitou prides himself in acting under the principle of the "style of no style", carrying himself as a person with uncharacteristic characteristics, he is known to possess a vast arsenal of Hakuda techniques that he has either collected from other sources or invented himself, which fall under specific categories; not simply as offensive or defensive. Whether they be hard-type or soft-type, many of them being broad in their strength and application, ranging from the basic to the advanced, Seireitou's level of skill with each of them is enough to consider each and every one of them lethal; so far so that each offensive technique could quite possibly end the life of almost any equal or lower strength foe should it connect directly, while his defensive techniques are considered nigh impenetrable, creating a space around his being that makes all aggressive attempts on his person ineffective. He has claimed to Minato Kuramoto that the primary goal in all of martial arts, and subsequently in Hakuda itself, is the protection of oneself and their allies; in other words, defense. In specific regards to the aforementioned, he has made it clear that he has had a hand in formulating and mastering several thousand different defensive techniques that all find their origins in one of the countless martial arts he has mastered. While most of Seireitou's Hakuda techniques fall under the various unique styles he employs (aside from his neijing techniques), many of his Hakuda techniques are commonplace, being techniques that fall under one of the many martial arts that he had mastered in the process of becoming a Grandmaster. It is noteworthy that many of the techniques he employs, more so the basic ones, are generally nameless or are simply not named by Seireitou when being used. In addition to the standard techniques he employs, Seireitou's level of mastery and his years upon years of training has resulted in the formation of several hundred different techniques unique Hakuda techniques only to him and him alone. While many of them find themselves being derived from techniques learnt prior by Seireitou, nearly every single one of them finds some form of connection to one (or possibly a combination) of the numerous martial arts he wields mastery in. Additionally, there are also techniques within his repertoire that normally act in setting up for Seireitou's plan of action when it comes to certain opponents. In this sense, they are likened to the pieces of a chess game, as certain techniques help to set the stage for a finishing move. Despite this, however, they can work in individual manners, ending an altercation with a single technique. Many of these techniques also happen to serve healing purposes, allowing for such things as bone-setting and other associated treatments. It appears many of these are rather unique and strange in their operations. In fact, it has been said that many of the techniques appear to be nothing even related to Hakuda. Those that were invented by Seireitou were created as a result of his unusual methods of martial arts training. Saori has hinted that some of them have to do with anatomy manipulation of his being.
 * Ikkotsu (一骨, "Single Bone"): Ideally the simplistic yet one of the most devastating neijing technique, for one who has mastered the concept, the Ikkotsu is a one-handed punch that is meant to connect with a specific point on the designated target. It is among Seireitou's most commonly used Hakuda techniques when wishing to end fights in an instant. At the point of contact with a target, Ikkotsu channels the neijing internal force through the fist, causing it to vibrate all throughout the body of the target being struck, causing massive destruction in their internal organs and subsequent organ systems. When diluted nearly ten times of its full strength, Seireitou's Ikkotsu has the strength to deal a decisive blow to an opponent of nearly equal or lesser power, causing all organs within the point of contact to rupture indefiniately. An Ikkotsu of similar power, dealt to a direct location such as the head or the arm, would cause the entire limb to collapse onto bloody pieces. It is for this reason that Seireitou never uses Ikkotsu beyond a dilution of one-fifth of its full power, as any more force applied to the punch would cause an instant kill of nearly any opponent if it were to connect. Full power Ikkotsu entails Seireitou combining both the neijing internal force and the external force of his own massive reserves of physical strength, uniting together to generate a punch of such force that decimates anything and everything that stands before it. Because of the technique's simplistic workings, Seireitou can cause the neijing energy that fans out from the Ikkotsu punch to behave in various ways, for a medley of different effects. Once the punch has been thrust outwards, the neijing force can instead be made to compress tightly, forming a drill-like punch that can punch through targets from a considerable distance away. Doing such a feat means that everything within that narrow space would be crushed. Against this drill form of Ikkotsu, should it connect with the target physically, would tear through everything within the frontal scope of Seireitou's fist. Even from roughly two kilometers away, it can punch a hole straight through an opponent's body when used in its weakened form. In a more defensive manner, Ikkotsu's force can be made to vibrate immediately outwards in the air from the fist once it has been thrust, forming a perfectly uniform and circular shield of neijing force that can serve as a powerful defense to most forms of offensive attacks. It can be used to dispel such attacks like Getsuga Tenshō with a single use of Ikkotsu. Because of Ikkotsu's very easily altered power, it is easily one of Seireitou's most versatile Hakuda techniques and equally devastating in combat.


 * Ikkotsu — Honō (一骨炎, "Single Bone — Blaze"): Neijing itself is not some sort of magical force that a Hakuda master can generate through training. At its core, neijing refers to the ability to project the martial artist's force through a medium via some form of contact. The Ikkotsu is, therefore, the most simplest application of this principle; allowing the user's force to be projected through a medium via a direct closed-fist punch. However, due to his unrivaled sense of control over his own body and its power, Seireitou can project this force in order to produce a myriad of different effects. The Ikkotsu — Honō focuses the internal force and projects it into the air through the Ikkotsu punch, thus projecting the force through the air particles around him, causing a concentrated and focused release of force that results in a spontaneous eruption of flames to be unleashed from his fist due to the friction being imposed by the collision of Seireitou's own projected force and the air itself. A single punch can cause the entire landscape to become exposed to massive explosions of flames that engulfs everything and anything. The addition of this flame feature enhances the effectiveness of the normal Ikkotsu, providing the effect of burning any opponent it punches through. The temperature of these "flame projectiles" varies depending upon the concentration of force being unleashed by Seireitou's punch, in that a weakened Ikkotsu will be able to produce embers hot enough to burn through rocks and some forms of metal, whereas a full-powered Ikkotsu could very well induce temperatures immense enough to burn through skin upon exposure to even a single attack. However, because of the Ikkotsu's focused structure and form, these eruptions of fire are normally controlled and directed toward specific targets, thus preventing undesired destruction.
 * Ikkotsu — Hakkutsu (一骨発掘, "Single Bone — Unearthing"): Arguably a far more controlled and precise projection of force, Seireitou drives the Ikkotsu into the ground below him, projecting his force through the entire earth itself and causing several fragments of dirt and rock to become unearthed in all shapes and sizes, depending on Seireitou's whim, that aim to crush all intended targets. In most cases, a single punch can allow him to cause several pillars of unearthed rock to erupt from the ground and fly toward destroying the targets. However, the Ikkotsu — Hakkutsu has far more uses when applied to other solid structures; although this is a technique very rarely utilized by Seireitou.
 * Ikkotsu — Ryōzan (一骨両斬, "Single Bone — Fissuring"): Not Yet Revealed
 * Ikkotsu — Sen'eikate (一骨先鋭化手, "Single Bone — Sharpened Hand"): Derived from Karate, Seireitou tightens together his fingers and forms a "knife hand" hand gesture with one of his hands. His neijing energy is focused along the back edge of his knife hand and, like that of a sword, Seireitou slashes his hand across in a particular direction and manner of his desire. The action of this motion causes anything and everything within the narrow range of his knife hand's back edge to be cut down. Sen'eikate is a far more refined neijing technique in that it has a very controlled aim and direction of destruction, unlike the dangerous Sōkotsu. Raian noted it to be the Hakuda equivalent of the Hitotsume: Nadegiri technique of Zanjutsu. It is so precise that most opponents are unaware the strike had occured until the injury forms on their body or the target in question has already tore in two. The force of the attack is great enough to even break through the blade of Ichigo Kurosaki's Bankai with strict ease. Despite its immense precision, Seireitou does not often utilize this attack.
 * Ikkotsu — Sentsū Shintōshō (一骨千貫通浸掌, "Single Bone — Thousand Penetrating Soaking Palm"): Not Yet Revealed


 * Sōkotsu (双骨, "Double Bone"): Having been invented as the two-fisted variation of the Ikkotsu, the Sōkotsu had initially been considered to be simply a twin usage of the base Ikkotsu technique itself. Genryūsai Shigekuni Yamamoto had used this primitive method when he destroyed Wonderweiss Margela, which despite its considered inferiority, was enough to completely eradicate the latter in a single move despite the Arrancar's high-level hierro defense. However, according to Seireitou, Yamamoto had used merely a small fragment of Sōkotsu's true power in that aforementioned fight. The premise of Seireitou's Sōkotsu involves allowing the neijing internal force to leave both of the fists upon contact with the target, like two rivers converging into a structure and overwhelming it, which at a basic understanding of the technique would lead one to believe it would merely double the effect of a normal one-handed Ikkotsu. However, this is incorrect. The secret behind Seireitou's Sōkotsu is that once the two fists make contact and release the internal force, a collision of the two waves of neijing energy occurs, which when used by someone who is lacking in neijing mastery, would cause the two waves to collapse upon each other and weaken their Sōkotsu in the overall view. In the grand scheme of things, that particular Sōkotsu would be only slightly stronger than a master-level Ikkotsu. Seireitou boasts that his Sōkotsu has been perfected, in that when he preforms the technique, the opposing waves of neijing released from both fists do not interfere and weaken one another, but instead bounce off of eachother, causing both individual neijing forces to vibrate several additional times with each collision while within the body of the target, spreading out in the target's body in a very chaotic manner as opposed to the uniform spreading of the Ikkotsu technique which can lead to an even more disastrous result. The randomized movement of the neijing force waves make it so everything connected to the point of contact will be decimated onto utter ruin, seeking to assure that any target struck by the Sōkotsu are completely and thoroughly destroyed. The result of these collisions leads to the neijing forces actually empowering eachother, trading energy between eachother as they seek to decimate the opponent. Seireitou considers his Sōkotsu to be cruel in that should an opponent be somehow capable of retaining their body structure upon being initially struck by the Sōkotsu, the neijing forces would continue to bounce off one another by trading energy between one another due to their never-ending collisions and also feeding off of the victim's own internal energy, continuously wrecking havoc within the body until the target is ultimately and utterly obliterated until not a trace of them remains. It is due to this reason that Seireitou considers his Sōkotsu to be a weapon of supreme destruction and restricts himself from ever using it in a fight unless it is truly needed.


 * Sōkotsu no Gōkei Kaimetsu (双骨の合計壊滅, literally "Total Annihilation of the Double Bone"): Unlike the Ikkotsu, which is a focused and concentrated projection of force, the Sōkotsu utilizes a two-fist strike because it releases a parallel projection of force that act upon each other in a chaotic and random manner; continuously bouncing off one another in an effort to constantly cause mayhem within the medium it was directed into by its user. While the Sōkotsu no Gōkei Kaimetsu has never been actually shown in use, Seireitou has stated it has the devastating potential to cause mass destruction which would be nigh impossible to maintain nor control due to the Sōkotsu's workings. It is because of this potential issue that Raian advised him against using it in Soul Society, where it could cause "unintended mass murder and devastation"; even when pitted against a multitude of opponents.


 * Kishōsaru (起床猿, "Rising Gorilla"): When utilizing at least half of his truest strength capacities, through loosening his spirit cuffs, Seireitou is able to actually cause the space around him to distort by sheer brute force via a hand strike. The air bends and snaps to accommodate this distortion of space, forming the shape of a gorilla's arm as it smashes into the target and seeks to crush them under the intense pressure of the hand strike. Because of the nature of this technique, normal spiritual attacks are rendered useless against it, as the distortion of space and the air bending around to fill in the vacuum make it difficult for anything to pass through it unscathed, much less at all. In addition, because the hand strike works in this manner, it can even bypass normal defenses. While it can be blocked and resisted to some degree, it is nigh impossible to actually defend against the attack in its entirety, as even a fraction will manage to find its way through. In Seireitou's words, the Kishōsaru makes the air act like water, filling in any and all holes in the opponent's defense.


 * Hishōtora (飛翔虎, "Soaring Tiger"): Similar to Kishōsaru, the Hishōtora is also a hand technique preformed when Seireitou has loosened his spirit cuffs and unleashed even more of his strength. Brute force is executed at near god-like speeds, like a sword being drawn from its sheath, causing flames to erupt from his body with every motion. Just like before, space is distorted and the air follows suit, but due to the incredible speed being used, the friction of his movements generate heat and flames that are carried by the air being led by the space distortion, forming the shape of a blazing tiger's arms with its fangs ready to tear anything in its path apart and render it asunder, which surrounds Seireitou's own physical arms that are held in a manner similar to a tiger's claws, such as those found in Hei Hu Quan stances. Seireitou rips at the air and strikes the opponent with an intense pressure that is followed by flames that engulf their being, burning their freshly-carved wounds that further deals them serious pain.


 * Kōjunzō (降順象, "Descending Elephant"): With the spirit cuffs loosened, and more of Seireitou's strength released to the forefront, the Kōjunzō is a kicking technique in which the vacuum caused by the force of his leg's strength is utilized as a weapon. More specifically, it is a kicking technique in which Seireitou thrusts out his leg in order to kick with the bottom of the foot, in which the brute force behind the attack causes a shockwave which blasts the air into the target like a cannon, which takes on the form of an elephant's foot stomping onto the intended target. However, while Kōjunzō is devastating even with a single kick making contact with its target, the true nature of the technique is in that Seireitou simultaneously manages to launch himself into a better angle while kicking for a subsequent follow-up Kōjunzō kick, making it possible to strike the opponent with multiple Kōjunzō kicks until they have been thoroughly crushed from every direction, with almost little to no chances of escape.


 * Yōko Tōkotsu (妖狐頭骨, "Demon Fox Skull"): An ultimate application of the Ikkotsu and Sōkotsu principles, the Yōko Tōkotsu is a powerful technique that is reserved as a trump card in Seireitou's arsenal of Hakuda techniques. It begins by him holding out his open hands with the palms facing the target, the left hand held right-side up and the right hand held upside down, and clapping together the bottoms of his palms together, which creates a pressurized spark of friction so great that it takes on the appearance of flames and forms the shape of a large kitsune head, complete with physical features such as eyes and ears, which surrounds his entire person and is great enough in size to completely block out the skies momentarily. Upon reaching and striking the target, the mouth of the kitsune opens and devours the target in a blaze of pure frictional force, ideally reducing the victim onto mere ashes. The resulting blow subsequently causes a release of pressure that expands outwards and overtakes an entire landscape, causing trees and plants alike to become uprooted in the wake of the Yōko Tōkotsu. Despite others suggesting that this technique is akin to a Kidō, Seireitou firmly denies this claim as its power comes solely from pure pressurized force and friction rather than reiryoku, allowing him to classify it as a true Hakuda technique.


 * Kaerikotsu (帰り骨, "Returning Bone"): Possibly the most devastating and dangerous defensive technique in Seireitou's Hakuda arsenal, the Kaerikotsu is a nearly invincible defense that employs the concept of neijing. By the utilization of his own neijing energy from within his body, being used as a bounce-off point, Seireitou can make it so that the physical attack of an opponent is unable to harm him and instead causes it to harm the attacker. In allowing the physical force to make contact with a part of Seireitou's body, the point of contact being the opponent's own body part being used to carry out the attack, the force of that strike reverberates in the opposite direction of the applied force, thus causing an immediate responsive counterforce in equal magnitude to the strength used by the attacker, causing that force to vibrate back through the opponent's body in the same manner it was being thrust outwards. Such a feat leads to the opponent's force returning into their body, fanning out inwards as if Seireitou himself carried out the assault, resulting in the opponent's internal biological systems being harmed severely, possibily even destroyed, in direct correlation to the amount of force that they themselves used to attack with. In essence, an opponent's force is returned in equal magnitude without Seireitou needing to expend any energy himself, or rather insignificant portions of energy, to bounce off the assault. The same action can be carried out if an opponent were to strike Seireitou with a weapon, causing said weapon to break apart if used without care. An opponent of significantly weaker power, attacking Seireitou with his Zanpakutō, would end up causing his own Zanpakutō to shatter into pieces while subsequently damaging his own hands from the naive assault. Against very specific energy attacks, such as the Getsuga Tenshō which deals a direct linear assault, Seireitou has been shown to use this defense to make it seem as though the attack had no effect whatsoever, despite whatever amount of power that is applied into the attack. The Kaerikotsu is very easily one of Seireitou's most invincible defenses.


 * External Manifestation: It is possible for Seireitou to materialize the Kaerikotsu through the very force of his killer intent. Through a mere gaze, he can erect what seems to resemble a barrier composed of pure spiritual energy, but in actuality, is but pure force of will that serves as the Kaerikotsu's medium. Once an opponent's attack makes contact, the power from their attack is apparently "soaked" into the wall of force and then exerted back outwards in a truly magnificent explosion; carrying the exact same properties as the original Kaerikotsu, however, the return force is less gracefully expressed. Since the original technique allowed for Seireitou to choose how to return the force back onto his source, thus making it possible for him to adjust the attack's properties in any way he sees fit, this external use merely smashes the force back onto its originator with the intent of delivering the same amount of force at them. While it is unrefined, Seireitou states that the immediate explosion makes it impossible for an opponent to counter the Kaerikotsu's return, thus ending any hopes of "playing ping-pong" with the attack in question.


 * Genryū Techniques: Within the Genryū, which is predominately a school of Zanjutsu, there are multiple hand-to-hand techniques that reflect the same principles found in the former discipline.
 * Genryū Ōgi: Kokorokara no Kotsu (元柳奥義: 心からの骨, literally "Original School Secret Technique: Wholehearted Bone"): Under Construction


 * Tsukiyubi (撞指, "Thrust Fingers"): By focusing the Hakkei force through the contact point of his two fingers, Seireitou generates a powerful thrust-like effect upon a simple touch upon an opponent's body. The result is instantaneously, immediately sending the target flying a considerable distance away along with causing them some degree of internal and external damage. Seireitou claims to have taught Shunsui Kyōraku this Hakuda technique.


 * Taketonbo (竹蜻蛉, "Bamboo Dragonfly"): With a swift motion of the hand, the practitioner essentially throws their target, ideally flipping them onto their back. However, it can be taken a step further, which allows the user to violently thrash the victim before finally allowing them to fall to the ground, dealing far more injuries and possibly leading to them having the wind knocked out of them. While the most basic use of this technique requires the hand of the user to grab at the target at lightning speeds in order to engage the throw, Seireitou further refined this technique to a level in which it does not require any physical contact whatsoever. Simply coming close to the silver-haired man's body is all that prompts the Taketonbo, allowing Seireitou to quickly neutralize an opponent's physical motion and influence their entire stance, which is the main focus of grappling techniques, subsequently causing him to throw the victim and ultimately flip them. If he so wishes, he can even repeatedly toss and throw his opponents, without ever lifting a single finger. Opponents that foolishly attempt to reach out and strike at Seireitou will find their center of balance quickly compromised, their equilibrium disrupted, and their entire beings thrown down; all in the same instant as they attempt to somehow understand what had just transpired.


 * Seijūken (球柔礼, Sphere of Gentle Energy) is one of Seireitou's various defensive Hakuda techniques. This style allows Seireitou to control the entire radius of distance covered by the length of both his arms and his Zanpakutō, by using his own spiritual power to feel out the attacks that enter that sphere of influence. He explains that it is meant for "occupying an enemy's territory". It is likened to a physical usage of Shogi, a game which involves positioning yourself at a point where you are at the greatest advantage. It is seen as a large sphere of reiatsu that surrounds the upper body of the user, and its size is directly associated with the user's mastery. Although, it seems that only those of master-class skill of Hakuda can actually see the sphere generated by the Seijūken. Klaus, being a master of Hakuda in his own right, saw no reasonable opening when confronting Seireitou, feeling almost frightened at the size of the sphere when crafted by Seireitou. The true purpose of Seijūken lies in the power to manifest the strikes of Muken instinctively, so as to crush all manner of opposition that move within its range. It stands as the first line of defense against all manner of attack. When mastered to a certain extent, according to Seireitou, the Seijūken can be reduced to a thin layer above the skin for the purpose of dodging the opponent's attacks at the last possible moment. An absolutely calm mind is necessary to use it, as even a slight degree of emotion will disrupt the technique. This is because the technique involves understanding one's opponent and feeling their rhythm.


 * Kyūsho Iyashi (急所癒し, "Vital Point Healing"): As the name implies, it is a technique developed by Seireitou that allows him to heal a person's damaged body through the activation of their internal dormant energy using his own energy as a catalyst, using their pressure points as the point at which his energy may enter their body. This reaction causes the, now active, internal energy to act by healing the points in the body where the damage is most heavily concentrated. From there, the internal force spans outwards like a pool throughout the body, healing all other points of damage, until the entire body is healed to physical working order. However, despite how useful a technique it is, several of the motions involved in this technique are rather inappropriate. They are very clearly identified as sexual foreplay motions, even though Seireitou denies this. It is further supported by the fact that sexual actions are involved in the technique's application due to Seireitou claiming it will only heal women, despite how obvious a lie that is. However, as morally reprehensible as it may be, the technique is highly effective, able to completely restore a body to full working order despite how badly damaged it may have been.
 * Hoshikudaki (星砕, "Star Destroyer"): Not Yet Revealed

Nukite (貫手, literally "Crossbeam Hand"): Originally belonging to the discipline of Karate, having later been adopted by many other martial arts, the Nukite is an open-hand strike that makes use of the fighter's fingers as a means of combat. Essentially, it is a strike that operates by an incrementally decreasing number of fingers in the form of knife hands in which each strike with its particular number of fingers has a specific purpose. Having been credited with its invention and integration into Karate's original chinese form, "Te", Seireitou is famous throughout Soul Society for his Nukite technique, which was said to have slain thousands of Hollow and Quincy, among others, in his time. Nukite has been often described as the tip of a swordmaster's blade in Seireitou's hands, operating with the same idea as it can cut through nearly anything with incredible precision and accuracy. However, its power and aim are dependent on the number of fingers at which Seireitou uses to preform the technique. In the hands of a Grandmaster, the Nukite ceases to simply exist as a technique and becomes its own fighting style altogether. Nukite makes the act of Seireitou using a weapon meaningless due to how simply amazingly powerful its cutting ability is as it can tear apart even iron and steel if it should lay before him as a target. The idea behind Nukite is a technique that can void all defenses that lay before the strike. However, this is merely the tip of the iceberg. It is a technique that can ideally break through any technique that should oppose it; whether it be an offensive opponent or a defensive target in nature, a "true" Nukite should be able to destroy it no matter the obstacle. The most famous use of the Nukite in all of Soul Society's history was when Seireitou, during his tenure as Captain, had used it with both hands to demolish Genryūsai Shigekuni Yamamoto's Sōkotsu strike; a collision which led to a massive explosion within Seireitei's walls and severely damaged one of the Captain-Commander's arms in the process, whilst leaving the silver-haired Captain unfazed in the aftermath. It can be said that the Nukite, or rather Seireitou's Nukite, surpasses the neijing techniques Ikkotsu and Sōkotsu in theory. The alteration of numbers in the fingers each Nukite technique uses will often correlation with a specific degree of destruction and accuracy that Seireitou intends to inflict upon the target. With each finger added to the Nukite, the attack focuses more on bludgeoning force as a means of tearing through the opposition while the technique with fewer fingers focuses more heavily on penetration and cutting. In addition to the difference in numbers of fingers, the original Nukite that Seireitou invented has almost thousands of different advanced techniques that utilize the former attack's principles as a base.


 * Yonhon Nukite (四本貫手, "Four-Finger Crossbeam Hand"): Not Yet Revealed
 * Sanbon Nukite (三本貫手, "Three-Finger Crossbeam Hand"): Not Yet Revealed
 * Nihon Nukite (二本貫手, "Two-Finger Crossbeam Hand"): Not Yet Revealed
 * Ippon Nukite (一本貫手, "One-Finger Crossbeam Hand"): Not Yet Revealed


 * Banshō Kyōkuha Nukite (万象杏都ハ貫手, "All-Covering Ultimate Destruction Crossbeam Hand"): Not Yet Revealed

Black Belt Techniques (黒帯の手法, Kuro-Obi no Shuhō): Through his mastery of the martial arts, Seireitou has attained a status of a Yūdansha; in other words, a true holder of a black belt. When one attains the status of black belt, they begin their advanced training and learn secret powerful techniques as they become more and more involved in the world of martial arts. Based on the "dan" (段, step/stage) grade, the difficulty and usage of the corresponding technique would be far higher the more advanced the black belt rank. In his pursuit of mastering both ancient and modern martial arts, Seireitou accumulated these black belt techniques into a personal system in that each technique's power would be determined by the rank at which a martial artist of that rank would typically learn it. There is no true art distinction that can be recognized by name, as multiple black belt techniques from an immense number of different martial arts that have been gathered by Seireitou's experiences.
 * Il Dan: Ilsok Pilsai (일단, īrudan: īrusoku pirusai; Korean for "First Step/Stage: One Strike Must Kill"): Not Yet Revealed
 * Yi Dan (이단, yīdan; Korean for "Second Step/Stage"): Not Yet Revealed
 * Sam Dan (삼단, samudan; Korean for "Third Step/Stage"): Not Yet Revealed
 * Sa Dan (사단, sadan; Korean for "Fourth Step/Stage"): Not Yet Revealed
 * O Dan (오단, ōdan; Korean for "Fifth Step/Stage"): Not Yet Revealed
 * Yuk Dan (육단, yūkudan; Korean for "Sixth Step/Stage"): Not Yet Revealed
 * Chil Dan (칠단, shīrudan; Korean for "Seventh Step/Stage"): Not Yet Revealed
 * Pal Dan (팔단, pārudan; Korean for "Eighth Step/Stage"): Not Yet Revealed
 * Gu Dan (구단, kūdan; Korean for "Ninth Step/Stage"): Not Yet Revealed
 * Sib Dan (십단, sībudan; Korean for "Tenth Step/Stage"): Not Yet Revealed

Master of the Hyeong: Under Construction

Suiryūsei (水流静, "Water Flow Control"; literally "commanding the movement of the water"): Truly one of the ultimate expressions of soft-type martial arts, the Suiryūsei is a technique designed by Seireitou himself and is acclaimed to reach a pinnacle of Hakuda when used by a person of his precipice of power and technique. In accordance with soft-type martial arts, the key is facing an opponent without intending to fight force with seemingly superior force, but rather to use the target's own power against them in some advantageous manner. Therefore, the Suiryūsei is a technique that finds the most effective method at allowing Seireitou to express this soft-type motive at the most extreme level possible. While the technique requires an absolute stillness of the mind and of the energy within the body, through the concept of Seihaku, Seireitou had mastered his own discipline to the point that he may engage in intensive combat with his soul excited through the use of Dōhaku without causing the Suiryūsei to lose potency. However, Seireitou gravely cautions those who attempt to use his technique to maintain complete control over their emotions and to keep an absolutely calm mind; otherwise, the skill is doomed to fail and the user may possibly lose their life. It is only because of Seireitou's unrivaled skill as a Hakuda Grandmaster that he finds himself capable of using Suiryūsei without fear of such a possibility; as if it were second-nature to the man. Seireitou comments that the Suiryūsei's full power is only possible when used by someone that has mastered the Seihaku; ideally making this technique one that exists on the precipice of a Grandmaster. After learning that Minato Kuramoto had become a Hakudaka whom uses the basic form of Seihaku, Seireitou had taught him the Suiryūsei, to which the former is capable of using it on a basic level due to lacking the level of prowess that his master does. It operates according to three general principles, or rather "levels", which follow one another in a sequence.
 * Understanding of the Flow: Comprehending the opponent's flow of energy, or rather understanding one's opponent and feeling their rhythm, is a critical necessity in truly mastering the martial arts. It is through such a feat that one is capable of perceiving the nature of their target's spirit. An untrained Hakudaka attempting to use this level of Suiryūsei may actually inadvertently lose concentration based on what they discover through this newfound perception. In addition, for any normal user, such an act takes a considerable amount of time, as they would need to fight their opponent (or rather, "spar" with them) for a sufficient length in order to truly comprehend their fighting flow so that Suiryūsei will become effective. However, to Seireitou, who can instantaneously discover information about his target within seconds of confrontation, such an act bears no time restraints. The feat of understanding and analysis is child's play when dealing with a person of Seireitou's level of prowess, meaning that Suiryūsei's first level is something almost instantaneously activated and completed in accordance with Seireitou's whim and motive alone.
 * Entering/Merging with the Flow: Perhaps the most commonly used level of the Suiryūsei in Seireitou's hands, the second level involves using the knowledge of the opponent's flow of energy and entering the flow; essentially becoming one with the target and their movements. While a normal user interprets this as simply combining the movements of the opponent with their own, to serve as a set-up for the third level, Seireitou has taken the second level to an extreme measure by completely mastering the idea of "merging with the flow". Suiryūsei will allow Seireitou to effectively enter the energy flow or movement of anything that he identifies as the target. Whether it be a substance, an enemy's attack or defense, a technique, a weapon, an opponent themselves, or anything in between, everything that exists has a flow of energy which Suiryūsei can analyze and then allow Seireitou to enter within its flow wavelength, essentially merging with it. The results that occur from such a union are often random and various, difficult as it ranges from target to target, as the two or more souls attempt a forced joining for an indeterminate amount of time. In the situation of Seireitou merging with an opponent, the two beings can actually become one, with certain traits overlapping and changing in the unison. Depending on the willpower of the individual or collective target(s), Seireitou may be capable of actually completely controlling their body and mind, allowing him to act whilst in such a unified state. He'd even be capable of accessing their abilities and memories, among other things, so long as it is within some degree of the scope that consist of his own powers. This is often represented by their hair becoming white in coloration. To an opposite extreme, the Suiryūsei's second level can even allow Seireitou merge his being with the intended target and render his influence silent within them, in order to ideally hide within the target and await a desired moment for escape. This proves quite helpful in pursuing an ambush or sneak attack. It appears that the technique does have a fail safe that allows Seireitou to escape and "break" the unification whenever he should deem necessary, even if the target is aware of his presence within them and are capable of struggling for control. However, he does note that against certain opponents whom could command control over energy flow that would rival his own, even an act of escape from the union would be close to impossible. It has been likened to that of the Hōgyoku in that the barriers between the souls of Seireitou and the target(s) are removed temporarily in order to allow for a successful merging. However, in order to prevent "soul suicide" from occurring, Seireitou maintains stability through his own will, and because of this, the complete merging that involves taking control of the target may only last for a specific length of time. The second level of the Suiryūsei was crucial in Seireitou's attempt to master the Shukuchi, as it allowed him to identify the "world's flow" as his target while merging with it, making it possible to engage in instantaneous teleportation.
 * Disruption of the Flow: The true nature of Suiryūsei's third level is rather unclear, especially when in Seireitou's hands due to the latter often stopping the technique after the second level. The idea behind the third level of the Suiryūsei is utter disruption and destruction of the target's flow or movements. While it hasn't been outright used by Seireitou in any notable confrontation, he expresses that it serves as a true finishing move, especially in his hands. The third level is also the most difficult to learn how to utilize, regardless of the method at which it is used. It appears that he dislikes having to resort to the third level of Suiryūsei because it can lead to the deaths of his targets; although, it appears that he can tailor the Suiryūsei at this stage to instead deal some sort of significant effect onto the target instead of causing their end.

Shiroyasha no Ōgi (白夜叉の奥義, "Secret Techniques of the White Demon"): Not Yet Revealed

Zanjutsu Master
Hakuda stands as the center pillar of Seireitou's power. It is through this that he may express his martial art will through various outlets, one of which happens to be the very art of Zanjutsu itself. Just as his martial arts may be focused through the elements around him, such as the air and enemy attacks, by his will as a Grandmaster, the blade itself serves as his "fist"; albeit, a far more refined and precise fist. In doing so, the concept of swordsman and blade are erased as there is only a single existence. Hakuda and Zanjutsu, as per Seireitou's belief, follow the same tenets at their core.

Master of the Sword: While Seireitou's first line of offense is often Hakuda, his level in Zanjutsu has been revealed to easily be at the level of master, shown by the way he handles his Zanpakutō as if it was second-nature. Many of the most powerful opponents he has defeated was done so with his sword, such as Utsūgi Kururugi and Datara Kawahiru. It has been explained that the art of the blade serves only to "expand" Seireitou's Hakuda. Because Hakuda is the art of one's self and the Zanpakutō itself is part of the martial artist's soul, it stands to reason that a Grandmaster can wield his blade just as he dons his fists, for the sword itself is a part of them, just as their arms and legs are. Hanzei Kurokami stated that a master swordsman of Seireitou's caliber makes his sword a barrier of sorts, subsequently stating the fact that if one were to enter this "barrier", Seireitou would defeat his opponent instantly. However, despite his level of skill, his combat prowess does not change if he should choose to draw his sword, unless he were to invoke his Zanpakutō's powers. This is due in part to the fact that his level of Hakuda is so immense, the art of Zanjutsu does not provide any sort of advantage that was inaccessible to him in Hakuda itself. It was stated by Seireitou that his Zanpakutō serves as a fist, just as his own hands and his Empty Fist martial art does. In other words, the act of using his sword means that he, for whatever possible reason, is seeking an alternate means of combat for the situation at hand. He could also clash against Raian Getsueikirite, a warrior of supposedly greater Zanjutsu prowess than Seireitou himself, forcing both to shift between it and Kidō, among other combat styles, in order to break the stalemate. He is able to fight on-par with Hikaru Kurosaki, a legendary swordsman of vast Zanjutsu technique in his own right, and even slice through his Getsuga Tenshō with strict ease (albeit the technique lacked killer intent). This similar action is preformed various times against many different forms of spiritual attacks, all of which resulted the same way; including that of elemental attacks such as fire. Seireitou is ambidextrous, meaning that he can effectively utilize his sword with either hand and still retain a similar level of strength and ability. Although, he can also shift the strength of each swinging arm, in order to throw off an opponent's initial deductions. He is capable of using his speed for flawless precision and to inflict lethal attacks without much effort. A simple swing of his blade is strong enough to easily cut an opponent, even at a longer distance. Seireitou prefers to wield his sword with his right hand, leaving the other hand free though it usually remains hanging. He is quite adept at blocking while his offense is capable of great precision. Seireitou's general method of sword fighting involves evasion and attacking an opponent either in the front or back using the element of surprise to overwhelm them. He has a tendency to use a "wait-and-see" approach, often countering an opponent with lazy-yet-skilled actions in order to gauge their level of skill and their fighting intent. In other words, Seireitou draws his opponents in, fighting less than his true capability, and then striking the fatal blow when his opponents believe to have the advantage over him. That being said, he is more than capable of ending fights against other skilled opponents in a single move when the moment strikes him. In addition, Seireitou has shown an ability to easily mimic the techniques used by other master-level swordsman with little effort. His unpredictable nature allows him to change his fighting style on a whim so as to keep his opponents unsure as to his next move. Those who witness Seireitou's prowess state that he "carries himself with a certain elegance", possessing skill that can only be identified as that of a master's level, despite not necessarily belonging to any specific school of swordsmanship. Additionally, through training under Dangun, Seireitou had understood the secret of "aiming the katana's will". This method involved being able to cut through steel, by eliminating the ability to cut through anything else. In this regard, one could direct the might of one thousand strikes in a single slash with this method. Similar to that of Hohō and Kidō, Seireitou's knowledge of theory far surpasses his abilities of application, despite how frighteningly powerful his application is. It is his knowledge of theory that is rivaled by Raian Getsueikirite, the Grandmaster of Zanjutsu among the four Yonkō, despite how the latter's application is said to surpass Seireitou's own.
 * Unique Footwork: Seireitou utilizes a form of footwork that is unlike that seen in most sword fights. While, like Hakuda, he prefers an "off-the-ground" method of fighting, all of his attacks seem to be led by a series of steps in accordance to a pseudo-clairvoyance that was developed during his training with Shōyō in order to avoid the attacks of his opponents by the least possible margin and using the least possible effort in order to place himself in the perfect position to strike in the very instant the opponent's strike misses. Because of this, Seireitou's overall method of swordfighting stresses two-step attacks in order to ensure that any and all who oppose him are thoroughly slain.

Kenjutsu (剣術, "Sword Technique"): By focusing his Hakuda through his blade, Seireitou is capable of directing all of his martial arts knowledge and techniques through the art of the blade — otherwise known as Kenjutsu. Because he is actually using his blade as the medium for his Hakuda, his Zanjutsu styles can appear to be abnormal and almost otherworldly because of the mystery that shroud his actual Hakuda. The result is that Seireitou's Kenjutsu has become a mystery in and of itself; as if something unique that those of the Zanjutsu disciplines may have difficulty comprehending it. In an attempt to explain the Kenjutsu phenomena that Seireitou is capable of, Hanzei states that it involves locating "cracks" along the pathways in the body's flow of energy that leak outwards from the soul. By learning to perceive these "cracks", and mastering the methods to attack them, allows one to essentially cut an opponent's soul and cause them unusual injuries that can lead to strange occurrences. Just as he is aware of all martial arts, Seireitou remains privy to all forms of swordsmanship, of both of the old and the new variety.
 * Kendō: The nature of Kendō is one of absolute resolve. It teaches those who practice its art that emotions are but windows; openings for an opponent to take advantage of. By learning to internalize pure focus, the blade of the Kendōka can never be overcome or blocked in battle. In essence, the sword is only as powerful as he who holds the blade. Seireitou demonstrates immense feats of swordsmanship through the use of Kendō, allowing him to even cut right through the blades of an opponent of equal skill and strength. In addition, by his unique mastery, Seireitou is capable of cutting through even substances that would be normally impossible for any sort of so-called master-level attack utilized by another Kendōka. This is most likely due to Kendō being meant for the purpose of directing one's willpower using the Zanpakutō as a medium and because of Seireitou's own indomitable spirit, it causes the sword's edge to become sharp enough to slice through any form of opposition. The strength of his slashes are matched only by his speed and precision, making it nearly impossible for even those of master-level to block his assaults as well as to cut at incredible miniscule measures such as nanometers. He can effectively silence most foes with a single swing of his blade.
 * Battōjutsu: Unlike other forms of Zanjutsu, Battōjutsu deals almost exclusively with the rapid drawing and sheathing of a sword. Ideally, when drawn, that moment is when the blade is being swung at its greatest speed, rather than when it is used normally in Kendō. It also allows the swordsman to use more force than typical due to the sheath directing the sword's movement, without the worry for uncertainty in precision. Essentially, the sword's path is guided by the sheath while the blade meets no resistance, moving several times faster than normal. Typically used for an element of surprise, the nature of Seireitou's Battōjutsu suits his own nature of fighting; meant for a chance to obliterate an opponent at the right moment before they catch wind. Like that of a snake's bite, Seireitou's draw and sheathe is far too quick to have noticed what took place until after the damage is done, with Raian being the only one capable of seeing these moves to an extent sufficient to block them. He is capable of using rapid Battōjutsu strikes, appearing as nothing more than small projectiles if anything else, for overwhelming any individual opponent or for dealing with a group of armed opponents.
 * Nōtōjutsu: The act of sheathing one's blade, Seireitou has demonstrated a unique Nōtōjutsu style in that he draws his blade only slightly and then pushes it back in quickly, causing a ringing sound to form from the collision. His very will and spiritual pressure allows this ringing vibration to be carried out and used in various practical means, such as creating an annoying sound that will allow for temporary stunning of an opponent. By combining neijing principles with the Nōtōjutsu, the vibrations that are released from the act of sheathing the blade can carry unique properties that can serve offensive and/or defensive measures.

Zanjutsu Techniques: Just as numerous as his Hakuda knowledge, Seireitou possesses a truly immense knowledge of Zanjutsu techniques, derived from various kenjutsu styles and subsequent teachings. Seireitou claims that he has also invented several techniques of his own that are unique in nature and can only be used by him or rather someone of his skill level. He often combines these techniques with his Hakuda techniques.
 * Sekīatsu (跡威圧, "Scar of the Forces"): In a battle between spiritual beings, such as the Shinigami, it is a struggle between spiritual pressure in which the stronger force subdues the weaker force. Despite this, the weaker force continues to struggle for control in this war of energy and wills. At the exchange of these pressures, there is a point in which potential spirit energy is built up because of this ongoing fight. By being capable of cutting through this "scar" of sorts that forms between the user and the opponent's spiritual pressures with a Kendō swing that carries a resolute will without any form of wavering whatsoever, one may release the trapped energy and fire it as an enormous wave of spiritual power. It is likened to the Getsuga Tenshō in its appearance. Usually the wave of energy is composed of the colors of both opposing spiritual energy, but in the hands of a master like Seireitou, it is energy that succumbs to the will of the swordsman and reflects this; in his case, the energy wave takes on a white color. It is considered a dangerous attack because its effectiveness and overall attack strength is derived from the level of both the user and the opponent, varying in proportion as well as in its shape and size. The Sekīatsu can be deemed a one-hit kill technique if executed properly and strikes the target head-on, due to the fact that it is just as powerful as the reiatsu being emitted from the target themselves, meaning that regardless of the defenses or the strength they may possess, it is as if they were being struck by their own great power. Seireitou, upon cutting through this scar, can shape the released energy in any manner he may wish. Additionally, if he is facing an opponent whose reiatsu is reflective of their Zanpakutō's elemental power, such as fighting an opponent with a fire-type weapon, the Sekīatsu itself will take on fire properties, including the power to burn through its target. This applies to other Kidō-type Zanpakutō as well. The Sekīatsu is a technique that requires not only an extremely high competence in Zanjutsu due to needed a finely-tuned bladed strike to actually manage to cut through the scar between spiritual pressures but also a very strong will to execute properly, otherwise the energy released from the point of potential may explode in all directions, damaging both the user and the opponent severely. According to Seireitou, it was built upon the principles of Hakuda that have been applied to Zanjutsu.


 * Kokorozan: Raikiri (心斬雷切, "Slash of the Heart: Lightning Cutter"): An extension of his Shinuchiken, which was developed through Hakuda and then later translated onto his Zanjutsu, Seireitou bore attention to an ancient story of a warrior who was said to carry a legendary blade. During a storm of tremendous proportions, he sought refuge underneath a tree. However, this was short-lived as a bolt of lightning from the heavens descended and struck the warrior. However, wielding his mighty sword, he cut through the lightning deity's will that lay within the lightning bolt, successfully preventing his inevitable death at the very hands of nature itself. This sword, for accomplishing such a feat, was later renamed from its original name to the name "Raikiri" - meaning lightning cutter. Applying these principles, Seireitou designed a technique that could serve as both a means of offense and defense at the same time. Just as lightning itself serves as an extension of Raijin, the thunder kami, the techniques utilized by an opponent also possess some degree of their will - a fragment, if you will, of their very essence. Spiritual energy, after all, is energy fueled by one's will. The Raikiri technique aims to strike the "heart" of any attack or defense the opponent(s) attempts to employ through the use of a sword strike. By simply striking at the technique, Seireitou can dispel it and subsequently render it asunder, regardless of its strength and effect. However, Raikiri's use does not end here. To strike the heart of a technique is to attack the will of its user. In cutting through the heart of the technique, it bestows some degree of mental and physical recoil onto the user in question. Concordantly, attacking Seireitou blindlessly with continious spiritual assaults or even allowing a spiritual construct to suffer blows from his blade is akin to signing a death warrant, as it repeatedly deals damage to the technique's user should they continue to allow the Raikiri to cut through them. In addition, Raikiri can also be manifested into a wave of white energy that serves as the same purpose as the original sword slash technique, albeit so as to strike from a distance.

"Asobō, Hanullim" (遊ぼう究極の現実, "Come out and Play, Hanullim"): Being a Zanjutsu Master, Seireitou is generally capable of allowing his Zanpakutō spirit to manifest into a physical form whenever he deems it. In addition, when certain times arise, Hanullim himself has the ability to manifest in his true form and even can do so from a considerable distance from his master, able to hear his call from wherever he is. He is able to release by himself, shown as the Zanpakutō bursts into white flames, most likely a result of Sōkyoku's current existence within the Zanpakutō. Seireitou commented that if Kamui's Zanpakutō, Shinbyeong, changes and decides fate, then his Hanullim challenges it. In addition to its standard method of manifesting into its true form, following the nineteen-month timeskip, Seireitou gained a new alternative way of releasing his Zanpakutō's Shikai. Hanullim's sword form will glow bright white, and will start to morph, turning into an energy-like substance before taking a solid shape of a massive white nine-tailed fox, that seems to feature strange black markings running up and around its body, as well as up each of its nine tails. Whilst in this form, Hanullim can charge large spheres of spiritual power in its mouth, and fire massive beams that are capable of causing destruction with a single use. He is also capable of spreading large waves of white flames from his roars and even his paws. Hanullim can also act as transportation and will change back into the energy-like substance before returning to its sword form when its duty has been fulfilled.

Hohō Master
Being a master-class fighter, Seireitou has developed immense levels of skill in the field of Hohō. In fact, his skill has grown to a point where it has become one of his more noticeable traits. Even within the use of a technique, Seireitou's immense physical strength coupled with his uniquely-toned musculature allows for his legs to produce instantaneous movement and allows him to react within a split second. Supplemented by his mastery of Seiten Shiranui-ryū, following the nineteen-month timeskip, this allowed him to develop an almost god-like speed, that even Mūkade's strange ability to track speed and movement couldn't keep up.

Shunpō Mastery: Seireitou's skill in Shunpō is so great that it seems as though he possesses a form of teleportation as he moves in the blink of an eye, simply "appearing" solidly instead of shimmering for a second like other Shunpō users. This allows him to move fast enough to easily parry a close-range killing blow by a Captain-level opponent. Seireitou manages to move at exceedingly incredible speeds, quick enough to appear behind Kamui's back and effectively counter him before the former could even turn to face him. He is capable of effortlessly dodging simultaneous attacks at close range and the evasion of Bankai level techniques. He moves so fast that opponents commonly do not know his movements until after he has made them and is skilled enough in his movements to evade at high speeds even when being attacked from behind. Ideally, his motions are far too difficult to predict until after the movement is carried out. During a fight with Raian Getsueikirite and Shinji Hirako in Soul Society, although Seireitou states that Raian's overconfidence and Shinji's weak resolve was impeding their performance, Seireitou was able to easily outmaneuver both opposing Shikai (despite Kagemusha and Sakenade's hypnotic powers) and mask-enhanced speed to the point he could casually lay a finger on Raian's forehead and still dodge a point-blank cero from Shinji, who had his fist against Seireitou's back. By rapidly increasing the speed at which each step is done at exponential levels, the user can move at beyond god-like speeds. Seireitou reveals to have a very fluid mastery of this, shown by his ability to invoke the technique as if it was second nature, despite the tendency for other users to end up with their legs broken due to inexperience. A master of Shunpō, such as Seireitou, can easily match and possibly surpass the speed associated with Shunkō, making it one of Seireitou's trump cards when all else fails. These rapidly-increasing steps cause multiple sounds to occur, in contrast to the regular use of Shunpō which produces a single light sound. Substances beneath him, such as tatami mats, appear to explode with each of his steps. In some cases, one can produce a spark of spiritual energy, similar to that of a Fullbringer's Bringer Light, and even burn the ground beneath him with each step. This is because, in Shunpō, the user exerts a stress-induced force on their legs just once, and then uses their spiritual energy to accelerate their movement without the need for further force. However, by accelerating the steps, force is exerted with each step, and with each step, more and more stress is exerted on the legs while using their spiritual energy to accelerate at god-like speeds. The mastery of Shunpō has enabled Seireitou to learn various techniques that are mastered only by the Shinigami elite of the Gotei 13.
 * Shunpō Techniques: His standing as a master in the field of Hohō has allowed him to learn several advanced techniques.
 * Utsusemi (空蝉; Cicada, referencing their molting): Way of Onmitsu, 3rd of the Shihō. It allows for a movement at great speed, leaving at least one tangible after-image behind. Seireitou's mastery of utsusemi allows for him to form several after-images, to the point where the after-images behave as solid clones.
 * Senka (閃花, Flash Blossom): A special Shunpō technique where one moves to their opponent's back, directly attacking and sealing one's Saketsu and Hakusui in one strike (effectively cutting them off of their spiritual energy flow). The movement is so fast that an opponent may not be able to tell whether he was attacked from the front or the back and even an outside observer may find it impossible to tell what the movements are.
 * Sekkaginkō (銀狐石火, "Flash of the Silver Fox"): Not Yet Revealed

Theoretical Knowledge: Although he has studied primarily in Shinigami combat, Seireitou has taken to studying the technique, advantages, and flaws of various other speed enhancement techniques, despite not being able to preform them himself. This knowledge has led to the creation of master-level Hohō techniques that are unique to Seireitou alone. Most specifically, he has studied the Quincy technique, Hirenkyaku (飛廉脚, "Flying Screen Step/God Step"; Viz translation, "Flying Bamboo-Blind Leg"). He has an interest in how they use their manipulation of reishi that allows them to "glide" rather than "step" when moving, and when faced against master-class opponents, adopts his movements to Quincy-style technique. In one instance, Andreas Nikolai noted that Seireitou was "moving less like a Shinigami and more like a Quincy".

Unique Varients: Being a master of Hohō, Seireitou has learned and developed difficult and powerful variants of his Shunpō technique that are modeled after other Hohō techniques such as Hirenkyaku, Sonído, and Bringer Light.
 * Yanagi Hayurashi (柳葉逍遥, Willow Leaf Walk): The penultimate result of Seireitou's research of the Quincy's Hirenkyaku, Yanagi Hayurashi causes spiritual energy to continuously cycle from one of his legs, through one of the his feet, into the other foot, and through the other leg, and around again. This action seems to allow Seireitou to remain in a "constant Shunpō", as coined by Raian, and allows him to "glide" with his movements instead of having to step, as demands the style of Shunpō. However, most noticeably, when the technique is initiated, it almost appears as though Seireitou has disappeared, fading away when he begins the movement. This is due to him entering an opponent's blind angles, making it near impossible to register him via eyesight. Although he is much too fast to spot, even through the trained eyes of Dante, the brief moments where his presence is visible, it is noticed by few that a spark of white light is generated at his feet. It is presumed that he uses that aforementioned cycle of spiritual energy to essentially "skate" through the "clouds of reishi" around him, while coupled with various acts of acrobatics, makes his movement impossible for even other master-class Hohō users to keep up with him or even make contact. In addition, Seireitou claims that the technique makes his center of gravity an illusion, a claim which was proven in the former's fight with Saiga Ūtakata.

Kidō Master
Many often remark that there exists only two true combat styles. Reijutsu, the spiritual arts, and Taijutsu, the physical arts. In order to maintain consistency with his strengths, the greatest of which is Hakuda, Seireitou had managed to turn his use of Kidō into another outlet of his martial arts; a skill he developed through studying the other fighting styles in Yāolù. It is often considered a "last resort" maneuver in combat, prior to using his Zanpakutō's powers, as Seireitou prefers to settle one-on-one disputes through direct Hakuda, but will invoke Kidō against multiple opponents. Seireitou's general ability in Kidō places him right on the borderline of master-class. He is well-versed in both forms of Kidō: Hadō, the offensive nature, and Bakudō, the defensive nature.

Unification of Hakuda and Kidō: Spellcasting is the act of expressing the "will of the spell" or rather the "will of nature", as Seireitou explains and Kamui himself confirms, in which the sorcerer calls forth the power of another force through their own will. Opposing this concept, martial arts are the act of expressing one's own will through personal action and motion. In other words, it can be described as expression the "will of the individual". The two are different but are actually two sides of the same coin as true perfection of the arts is only attained when one manages to unite the world with themselves. Only a Grandmaster of an art can ever hope to truly achieve such a precipice and those who do so are forever regarded as the most powerful of beings. Because Seireitou himself is not at the level a typical Grandmaster of Kidō would be capable of using the spell arts, he had abandoned this pursuit and instead tried to express the art of Kidō in his own unique way: through the teachings of Hakuda. However, it was later revealed that the other reason why he could no longer use Kidō in the conventional method was because his Zanpakutō, Hanullim, is also a kidō-type by nature which makes it an aspect of its domain and, in addition, could further affect Seireitou's mentality by forcing him to become Shiroyasha once again. Therefore, through Hakuda, which is the expression of the individual's will, Seireitou could prevent such a result. He pursued his own method of Kidō by utilizing the principles of Hakuda to instead manifest the spells, meaning that he would only require the will of his martial arts in the process, which subsequently prevented Hanullim from interfering. In doing so, he managed to accumulate his skills together and focus them in order to further perfect Hakuda beyond the "perfection limit" that many believe exist. Kidō's spells are created by converting the reiryoku within the castor to form the spell. In other words, if one were to consider the reiryoku energy to be the "life force", or "yang", that fuels the power of the spell and also determines its effects, then the will used to create the spell imposes a "shaping force", or "yin", that forms it. Yin and yang are the key components that must be taken into account. Hakuda itself works the same way, though through different means. The energy within, or rather the aforementioned yang force, is used to express Hakuda through martial arts techniques and forms, in which the latter provides the shape in this case. By integrating the same understanding into Kidō, these two energies unite and form the spell that will act as if it were a part of Seireitou himself; like that of a fist or a kick, in other terms. In Hakuda, or rather Seireitou's own Hakuda, the same concept is held in regard. The unification of everything Seireitou knows of Hakuda is used to produce this shaping force while drawing on the life force energy; Hōkōryū's direction and flow applications are the very base foundation of the concept. While, at first, this different way of using Kidō was strange and alien to Seireitou, requiring great control and focus to carry out. It took almost two hundred years, according to Seireitou, to master this form of spellcasting to the point that it has become second nature and causes minimal strain on his concentration and mentality, as very little effort is now needed to actually carry out the technique.

Imposition of Will: An extension of his Muken and Hōkōryū, Seireitou's ability with Hakuda allows for him to project his martial arts will through certain mediums which will create oscillations for various specific purposes. In other words, by willing the vibrations of reishi to either speed up or slow down, Seireitou can conjure forth special effects that are often likened to magic. However, Seireitou denies such a claim by assuring that it is a skill developed through Grandmaster prowess in Hakuda. However, the principles behind its conception are similar to those found in Kidō itself. Martial arts teach a principle that promotes the ideal of learning to extend one's awareness to become one with nature and subsequently their surroundings. This is a skill that takes such a teaching and brings it to the furthest point possible. Its concept lies in the idea of Seihaku and Dōhaku, in that when a warrior learns to excite their soul through combat or silence their heart to develop pristine focus and concentration, they seemingly will forth their abilities to increase by vast degrees. However, instead of his own spirit acting as the focus of this excitation and/or silencing, Seireitou extends his awareness to will forth such occurrances onto the reishi around him. In doing so, nature itself serves as a "heart beat" that is connected to Seireitou's martial arts will and therefore, he may choose to make it beat faster or beat slower, which will result in the magic-like effects that opponents stare in awe before becoming its victims. While he had limited manipulation through this skill, he had eventually mastered it by studying the Quincy abilities of reishi manipulation. It is truly a style of Hakuda that goes beyond the physical and exists as a mystery, something that Seireitou himself had come to discover whilst reaching the pinnacle of the martial arts. He has noted that because it allows him to treat the reishi around him, among other aspects of his surroundings (such as kishi, which are also influenced by this skill), the exercise of breathing control becomes a critical foundation of its effectiveness. By combining this with his Seikeiryū, he has displayed a power to actually bend and shape the surroundings around him. A basic display of this combination was to actually forge a specialized Senkaimon, allowing for ideal travel to any desired dimension.
 * Sokushin (促進, "Acceleration/Facilitation"): Heat itself is born from the vibrations of particles that are sped up by external and internal forces. With this understanding, Seireitou can excite the reishi around him to generate incredible bursts of blue fire; it is a blue because of the coloration of the spiritons, though they become red/orange when exciting kishi particles. It has been noted that the flames generated by the Sokushin technique are almost exactly the same to the Heiliges Feuer, something Seireitou had commented to have played an important role in the inspiration for the Sokushin technique. The blue flames appear to be strong enough to actually burn through the rocks of Hueco Mundo which are normally resistant to flames. While the flames are, on their own, quite hot and extremely lethal, Seireitou can actually increase the heat and temperature by simply willing the vibrations to further accelerate. In some instances, he has revealed the capability of speeding up these oscillations so much that they result in enormous explosions of great destruction. Despite boasting such incredible might, because this is simply the act of willing the vibrations to go faster, the flames that Sokushin creates exist only in the spot in space at which Seireitou enacted his will. This limitation can be rendered void by simply utilizing Hōkōryū to transition the blue embers and move it in accordance to his whim. While this can be done normally through mental command, Seireitou also prefers to engage in physical combat, allowing the blue flames to erupt outwards in order to supplement his actions. Muken can also be applied to the Sokushin, creating large fiery fists that crush everything before them. By using the Spirit Wave, it also becomes possible for Seireitou to acceleration the vibrations of reishi that compose spiritual beings, such as Shinigami and Hollows; however, it is noted that this is a far more difficult, albeit still possible, task in which the effort needed to successfully carry out the technique is proportional to the will that the target possesses. While potent and effective, the flames pale in comparison to the white flames of Hanullim.
 * Shijima (静寂, "Silence/Stillness"): Stillness... a simple term which conveys a large aspect of the martial arts. When the mind and heart have become completely still and focused, like that of a perfect crystal, comprehension of the enemy and the world become clear as undisturbed water to the martial artist. While many misconstrue this as some sort of inner peace, it is actually a state of acceptance. Whether evil and doubt lurks in the heart or not becomes irrelevant, as accepting them removes whatever possible influence they may possibly hold. And in such a state of mental stillness, basicity returns and all things may become anew. Therefore, in actual application of this concept, through means of projecting such stillness onto the world around him instead of within, Seireitou slows down the reishi vibrations to the point of utter stillness, through this "silence of the heart". The technique makes it possible to actually eliminate the oscillations which provide particles their orientation and subsequently renders them completely and utterly still. Causing reishi to lose their vibrations means that they no longer possess the illusion of their unique appearance and actually emit a faint glow due to their stationary existence, becoming something akin to crystals. Allowing several reishi particles in the same area to all become influenced by the Shijima technique means that Seireitou can produce crystal-like walls and various structures to act as shields, among other potential constructs. It is often mistaken as a sort of magical abiliy which conjures ice and emits this onto those the user wishes. It is, in truth, an act of Hakuda. The theory behind Shijima is to will forth the vibrations to slow down so that the binding forces which maintain their molecular state of unique existence can tie them together to complete packing efficiency; such as water vapor being chilled to return to its ice form. By combining this technique with Hōkōryū, he can actually move the crystallized reishi constructs for the purpose of practicality in combat and other associated endeavours. It is possible to manifest the Shijima as a burst of icy-cold wind through mental command or even through his own body, serving a purpose of freezing all targets subjected to its effects. A large-scale version of the aforementioned manifestation allows him to actually transform the landscape into a frozen tundra. Cold air appears to slowly exude from his person when he calms his heart and enters "silence", literally seen from his breath, which normally serves as an indictator that this technique has been put into action. Despite few actual uses, he rarely utilizes the Shijima technique, meaning that its full nature has yet to be truly ascertained. He demonstrated the Shijima within the Dangai Precipice World, where he imposed his will to "silence" the force of Reason around him in order to stop the flow of the Kōryū; similar in principle to the purpose of the Kaikyō Kotei device.
 * Insotsu (引率, "Leading/Guidance"): Reishi itself is unique in that it is a unit of pure energy that becomes a physical particle because of the collective will that surrounds it. Because of this composition, it is made of yin and yang energies. With this skill, Seireitou can actually seperate these energies from one another by focusing his martial will to mimic that of a quantum-sharpened blade which can "cut" through the forces that hold together the particles of reishi. This causes an imbalance and the will that gives the particle its orientation will wish to restore equilibrium and balance. By providing direction, Seireitou can harness the pure lightning force that erupts from this crashing attempt at restoring balance and aim it toward specific targets. While this is often done through certain martial arts patterns, such as kata or hyeong, he can also simply provide release and guidance through his mind. The lightning, often a bright blue color, is extremely potent albeit dependent on his location, as areas with higher concentrations of reishi will provide far stronger lightning bursts. However, Seireitou notes that it is important to understand that once these yin and yang energies have been split from the original reishi particles, the user of the Insotsu is merely its humble host and must not force the crashing of energies in any way, but simply provide release and aim to truly harness its might. The heart must become cold and silent, not allowing emotion to influence the host. Because it requires absolute understanding of such miniscule particles of energy, the Insotsu is a technique that operates similar in principle to that of the Shijima, meaning that Seireitou silences his own heart and by imposing such a will onto the reishi around him, he makes it possible to seperate the composite yin-yang energies. Seireitou displayed a "constant" variation of this technique in which his body becomes enveloped in a flickering aura of lightning that can augment his physical strikes while providing a grand defense.

Spell Master: Being yet another outlet for his Hakuda, Seireitou's use of Kidō can be considered to be quite great in terms of skill, being able to easily summon spells at the blink of an eye without the incantation and still have it boast extreme potency. Because of this, Seireitou is capable of unleashing wave after wave of spells without needing time in between. Although Kidō is commonly utilized for the purpose of adding a surprise edge to the tide of a battle, while he does also follow this paradigm, Seireitou will typically resort to large-scale offensive assaults with Hadō while relying on Bakudō as a precautionary back-up in the event that his Hadō assaults are unable to finish off his opponent. Seireitou's use of Bakudō is surprisingly high, capable of generating even a spell of Dankū almost instantaneously without incantation. Without even displaying effort, he has shown himself capable of making high-level seals undetected until the trap is sprung, and is also able to effortlessly hide Kidō within other active Kidō spells. In addition, he can seal Kidō spells within certain objects or structures by employing the "silence of the heart" Hakuda skill, enabling them to activate when a specific condition is met. Seireitou is versed in a medley of Kidō spells that often escape the broad classifications of Hadō and Bakudō, some of which are unheard of by those under the expert class. Seireitou was also capable of using a form of teleportation that Shiori Miyamoto, as proficient as she is, hadn't known existed. He is also able to use this ability to completely hide his presence and spiritual energy, as not to be tracked. He is also shown able to produce powerful continuous spells to act as extra protection to his being while in battle. Seireitou can also freely refine and modify his Kidō abilities and spells for various purposes. Most noticeably, he used Bakudō number eighty-eight Dankū as a wall composed of a jelly-like substance with immensely thick viscosity instead of a solid shield. This allowed him to slow down any physical attack and ensnare the opponent, as well as distribute the force of the attack through the surface area of the Dankū, shattering the edges to release the trapped energy and effectively weakening the ensnared technique. He does seem to have some competency with Kaidō, the faction of healing spells, though just enough to administer first aid or to heal injuries that had been inflicted within a certain time frame. His understanding of the advanced mechanics that go into the arrangement of spiritual energy allow him to effortlessly understand almost any type of Kidō spell, even if it is a spell that he has never seen before.

Martial Arts Spellcasting: Since he treats Kidō as a part of himself, like that of Hakuda, he often changes the conventional shape of well-known spells to enforce this point. Examples of this include turning Sōkatsui into a flurry of fist-shaped projectiles, producing a wide-spread Ōkasen that flies outwards like that of a roundhouse kick, and making Sajō Sabaku act as though it were enacting a Jujutsu hold over the opponent; among many other applications. Despite changing the shape and form of these spells to better reflect Hakuda, the effects that each unique Kidō possesses are still retained completely. Tadoku Getsueikirite was the one to coin the skill as "martial arts spellcasting". One of the most prominent methods of this skill is through integrating them into his Hakuda stances. He is able to apply particular Kidō techniques (along with a myriad of other obscure spells) to supplement and benefit his Hakuda techniques and stances, such as using altered Seki spells to surround his fists in energy-composed tekkō, allowing him to combat an opponent's own spiritual attacks (including that of other Kidō) with his bare hands while stunning any opponent struck by his physical strikes.

Combination of Kidō Spells: Given that Seireitou is capable of using the Nijū Eishō method of incantation, it is not a stretch that he is also able to fuse together different spells for unique effects. This is not limited to just one type of Kidō, as he has shown himself capable of also fusing together Hadō and Bakudō spells to produce spells that function as offense and defense at the same time.
 * Ōka Akahibana (黄火赤火花, "Yellow Fire, Red Glow") is a self-created spell that combines Hadō numbers thirty-one, Shakkahō, and thirty-two, Ōkasen. It takes the appearance of a swirling ball of spiritual energy that appears reminiscent to that of the sun which then erupts from his hand like that of a powerful burst of energy which can cause severe burns upon impact. However, it can also be launched in his orb-like form. Once striking its target, the spell expands outwards and causes a tremendous explosion. According to Raian Getsueikirite, despite being created from two middle-level spells, the combined spell itself had the force of near seventies-level and possibly stronger if the Nijū Eishō incantation technique is used.


 * Jikūinyū (時空移入, Spacetime Migration): During his training in Asadal, Seireitou modified the Kūkanten'i and Jikanteishi forbidden spells, creating a far more personalized technique that combines both aspects. By placing two fingers to his forehead, he uses his reiatsu to form a "thread" between himself and his desired location, channeling his spiritual energy through this thread. This action is done to "bridge the gap between two locations using his mind as a bridge". In order to do this, however, Seireitou must have a specific destination in mind, in that he must be able to lock onto a spiritual energy signature that he himself is familiar with, whether it be a specific person or a general location of which he is familiar with that area's reishi concentration. When being used, Seireitou will seemingly flash away, as if he was using some form of Hohō, shimmering with a brief green light (most likely from the original Kūkanten'i spell). It is an instantaneous movement of his body from one space to another space or from two different realms. Jikanteishi serves to eliminate the time factor, which means speed is not involved in its use, allowing the user to travel any distance within the same time frame. The technique has battle applications, serving as a far better tool that can be used to surprise an opponent, though because of the concentration needed to preform the technique, Seireitou prefers to stick to using his Shukuchi technique in battle instead. The limits of Jikūinyū's movement are almost non-existent, as Seireitou can travel from places within the same dimensional space as well as other dimensions, such as using the technique to teleport from the Soul Society to Hueco Mundo. Those who are in physical contact with Seireitou when the technique is used will be able to teleport with him, although Seireitou confesses that the more people he attempts to teleport with him, the more energy the Kidō spell requires.

Sugurekeshin (優れ体現, "Personification of Sorcery"): Invented during his training in Reiōkyū alongside his Yonkō comrades, Seireitou used a similar principle from martial arts, which states that one must learn to combine himself, his soul, his mind, and his technique, into a single entity which allowed him to develope a personal Kidō style of combat that would best amplify his Hakuda prowess. While it is presumed by most that this style exists for the purpose of strengthening his Hakuda, this is actually incorrect. The purpose of Sugurekeshin, according to Seireitou, is to "uphold Jinseiken". It allows for him to face his opponents in a more sparring-like manner, due to it being said that his pure Hakuda capabilities are much too dangerous to be used to their fullest extent in a battle if he is to prevent killing his opponents. If the extremely-weakened versions of his Hakuda techniques are incapable of beating an opponent, Sugurekeshin is stated to be the next line of offense, as Seireitou claims using any of his Hakuda abilities at full force is far too dangerous. Ideally, Seireitou uses the flow of reiryoku within his body to fuel and focus any particular Kidō spell (or a mixture of spells) of his choosing and it affects his body in accordance with the spell's own abilities. Likewise, his appearance and spiritual aura may also change drastically to best represent the spell he is using. It appears that the more higher-tier the spell he unites with, the greater the threat that poses to his body due to the intensity and pressure that the Kidō spell is composed of in its general use. Kamui noted that the name of this Kidō style was "rather boastful", in that claiming to become the personification of Kidō itself is arrogant in and of itself, subsequently stating that if a true Master like himself "subdues" Kidō to tame its power, then Seireitou must "unify" with Kidō in order to provide an appropriate response.
 * Kasōken (火葬拳, "Fist of the Cremation"): In using Ittō Kasō from within his body, though at a severely smaller scale than its actual external spell form, Seireitou's reiatsu aura becomes an intense crimson red in color, similar to the appearance of the aforementioned spell, and his hair spikes upwards once the technique is initially activated, bearing a dark red tint. The result of this technique causes a multiplication of sorts within Seireitou, an immense upsurge of pure reiryoku that heightens all forms of spiritual and physical attributes, causing his spiritual energy intensity and quality to double (or triple, quadruple, et cetera, depending on the layers of the technique), allowing for an instantaneous increase in overall power. In addition, all of Seireitou's reiatsu-based techniques, such as Reihikari, are all empowered and improved by similar levels. Due to the flame-like nature of the spell, when Kasōken is initiated, all injuries on Seireitou's body become cauterized in order to stop any blood flow from prior-obtained wounds in battle. Blood coursing through the brain is also enhanced, allowing thinking processes to become voluntarily enhanced proportionally to the level of Kasōken used, as well as Seireitou's muscles and blood veins. Some of the more noticeable aspects of the Kasōken use is the enhancement displayed in speed and strength, as well as his base spiritual power. While normally the technique is meant to be used for the duration of a "heartbeat", Seireitou has shown himself to use the technique to raise his spiritual energy levels to higher degrees while dissipating the crimson aura, ideally trapping his aura within him to achieve a more natural look so as not to exert unnecessary reiatsu. However, the specifics of such a feat have yet to be disclosed by Seireitou. Kasōken can be enhanced to further degrees by voluntarily increasing the amount of reiryoku usage of the internal Ittō Kasō spell, thus serving to enhance Seireitou's level of spiritual power and subsequent physical attributes by that desired amount. However, there in-lies the true dangers of Kasōken; just as the spell itself is known as a "spell of sacrifice", over-enhancing the Kasōken can lead to the destruction of Seireitou's muscles, prompting him to forgo any desire of moving beyond a triple-layered (times four base stat) Kasōken technique.

Steps of Shukuchi
Martial arts finds all of its foundation in the legs. This is why such things as stance and foot positioning are key factors that can influence confrontations. With his immense degree of Hakuda capabilities, it becomes possible to apply its teachings to the art of Hōhō in order to capitalize upon the act of motion. By doing so, he manages to attain a technique that transcends the mundane understanding of speed and footwork.

Shukuchi (縮地, Reduced Earth): Upon reaching Hakuda's pinnacle precipice, one comes to fully understand their existence and attains a centered undisturbed tranquility. They may see the world for what it truly is: a flow of energy, making various twists and turns, at a medley of angles and rhythms. Essentially, one realizes that life is in a constant state of unyielding motion. In doing so, it becomes possible to enter this flow and "ride" it to one's location instantaneously. This is known as the art of reducing earth, the Shukuchi, a technique regarded in legend by the Kami who first utilized its ability; as achieved through the skill of a Hakudaka of Seireitou's prowess. As though one were swimming down a river, Seireitou can transition between two points of space by riding the world's own energy flow. Theoretically, it is possible for him to close the distance no matter what restrictions may be in place, whether they be of the physical or even spiritual variety. For combat purposes, the Maai, the distance between two opponents, is known as the physical personification of this flow. Seireitou can immediately close this space between himself and his opponent(s) in battle. Nothing appears possible to hinder the Shukuchi's motion; distance itself is of no consequence to this technique, as even massive distances of spacial separation are nothing to this technique. The benefit of this motion technique is that distance can be crossed with excluding time itself as a factor. Ichigo Kurosaki, when brought to another location by Seireitou via the Shukuchi technique, described the experience as such. Within a split-second, the two of them arrived in a barren wasteland, far away from the grassy knolls where Ichigo could see the sekki-seki castle known as Seireitei; where he had just stood not even a second before this change of scenery. Though, the transition felt... weird. The moment he had realized Seireitou touched him, his vision was quickly blinded by what appeared to be a river of various colors; some he knew and some he hadn't ever laid eyes upon before. It has seemed as though they were swimming in this river of colors, but before he comprehended such a thing, they had arrived in their destination. A strange feeling indeed... It was no flash step that the silver-haired man had just used to bring them to their location. It was more like... teleportation than anything else. Whether a vast distance or even a short one, time becomes nonexistant as the distance is crossed instantaneously. Sōkudo had believed that the Shukuchi allows Seireitou to move from one point in space to another point in space while remaining within the exact same time-frame, making both distance and speed negligible. The technique reveals to possess the ability to even allow Seireitou to escape Sōkudo's space-time techniques generated by the Kuro no Hōgyoku, despite the latter already being in physical contact with him. Even when he is in contact with another person or object, he is still able to utilize the technique and, if he so wishes, can teleport other objects as well. It goes without saying that the technique completely surpasses any form of Hohō, as it is a manipulation of time and space through the martial will of Seireitou's Hakuda rather than accelerated movement.

Shunkō
Being able to infuse the spell-based techniques of Kidō and the physical techniques of Hakuda allows for Seireitou to utilize the Shunkō (瞬閧, literally "Flash Cry"), an advanced battle technique which exists as a hybrid between the two aforementioned disciplines. In the olden days, its name came from the idea of an "instant battle cry"; a method that would allow Shinigami to use spells in order to restore their strength when they were physically battle-worn. It has been often described as the highest level of Hakuda, making it possible to bypass normal limitations during confrontations. Seireitou is acclaimed to have utterly mastered the Shunkō to an unrivaled degree, making it an invincible tool of destruction.

Eight Styles of Shunkō: The basis of Shunkō is founded upon the idea of the energy flow used by Kidō being maintained within the body of the user. This is an energy flow that is constantly in flux and depending upon where it is moving and how it is behaving, this will decide upon its qualities and overall characteristics. Therefore, with the understanding that there exists eight natures in which yin and yang, that which composes everything, normally act (in accordance with the ba gua), it is reasonably deduced that regardless of the literally innumerable energy flows, they must all arguably fall under one of eight respective categories. Shunkō itself, in other words, can manifest as eight different forms which depends on the method the Kidō energy within the body is behaving. The Shihōin Clan is famous for having mastered the "lightning" nature of Shunkō whereas those such as Suì-Fēng have learned to use the "wind" nature. Most cases in which one has learned to use the Shunkō technique, the nature of which they end up falling into usually depends on their personality traits. However, Seireitou, who has become a legendary master of the Hakuda arts, has managed to utilize each and every one of the eight Shunkō natures. Subsequently, he has mastered all eight, having turned each and every one of them into lethal forces of nature that can wipe out battalions of warriors within seconds. It has been said that his original nature was "fire". Even those that have learned multiple natures of the Shunkō normally lack the capability to activate them concurrently. Seireitou has demonstrated the ability to use up to three different Shunkō natures at any given time, claiming that using any more would most likely be unnecessary but also potentially self-destructive due to multiple energy flows behaving within the body at a single moment. While Seireitou can allow three different energy flows to behave within him under perfect control, becoming a skill that is second nature, it is still a technique that demands such immense focus and internal stability; which merely serves to show that Seireitou can tame even the most chaotic powers and impose an incredible level of concentration without seemingly breaking a sweat.

Hanki (反鬼, "Reverse Demon"): Not Yet Revealed
 * Hanki Sōsai (反鬼総裁, "Reverse Demon Mutual Cancellation"): Not Yet Revealed

Onmyōōu Shunkō (陰陽掩う瞬閧, "Yin-Yang Encompassing Flash Cry")

Sengai Sabaki (仙骸捌き, literally "Sage Body Management"): Built upon the principles of both Hakuda and Hohō, applied through the medium of Kidō, the Sengai Sabaki is a battle technique derivative of Shunkō. In the martial arts, every posture and motion has a specific purpose. All techniques and stances have a reason for their use. One is taught not to waste movement as it reflects a lack of skill and leaves one vulnerable. When combined and patched together in the correct sequence, they produce a series of movements that can accomplish anything that the martial artist may desire. The Sengai Sabaki is a system of "stances" that are forged by various Kidō spells laced together, like a patchwork fabric with various threads tied together, in order to support one another and maintain a consistency that produce a unique effect for its user. Depending on which spells are put together, in what order and what method used to do so, the resulting combat stance will provide unique effects to its user. In many ways, Seireitou has considered Shunkō to serve as the Sengai Sabaki's "most basic and raw stance".

Reitai Shiranui-ryū
The Reitai Shiranui-ryū (霊体不知火流, "Spirit-Body Guiding Light Style") is an ancient swordsmanship-dominant style that has been passed down through generations, which has been refined and expanded time and again by each successor of the art form. According to Shōyō's Zanpakutō, Seohak, it is the penultimate union of the principles which comprise the four Shinigami combat forms. It uses the precision of Zanjutsu, the form of Hakuda, the control of Kidō, and the motion of Hohō, all joined into one specific combat style that makes the Reitai Shiranui-ryū so dangerous to contend with. Ideally, because of this, the first incarnation of the original art (in other words, its second version) was designed to be the perfect tool for war. It was used in its second stage of development by the leader of the King of Souls' guard service, and was called the "black ship" due to being able to secure victory for whichever side wielded it. However, the story goes on to say that because of his inexperience, he ended up killing himself during battle due to overuse of his abilities. Thus, only someone who has obtained master-level ability in the four fundamental styles could possibly come to master the Reitai Shiranui-ryū. In the hands of a true successor, Shōyō called it "a tool of understanding".

Despite being composed of the principles that govern the four standard forms of combat, the Reitai Shiranui-ryū itself is a style that finds its core tenet in the concept of perfection; in that, the style focuses on the absolute perfection of its wielder, and that each and every successor contributed to the style in some way in order to perfect its power even further. Its name, according to Shōyō, which is composed of the words "rei" (meaning spirit) and "tai" (meaning body), refers to the idea in martial arts that perfection is only a goal that can only be pursued when one manages to unify mind, body, soul, and skill. Therefore, the Reitai Shiranui-ryū focuses on the complete and utter perfection of the user's own skills and power, as it aims to bring the user's abilities to the farthest extreme. Power and strength are heightened in the techniques that make use of Reitai Shiranui-ryū, the force of which is meant for the purpose of the obliteration and utter annihilation of the targets. Speed is focused in all aspects of the style, as the techniques demonstrated by Seireitou are all preformed at god-like speed that surpasses even that of master-level Shunpō. Blindingly fast, to the point that even master swordsman cannot keep track of his actions. But it is not just in the literal sense of the word. The speed of Seireitou's attacks, the speed of his body movements, the speed of his perception and ability to read an opponent - it is a style that focuses on perfecting all of the speeds necessary for battle. These are, however, but the initial aspects of the Reitai Shiranui-ryū, as there are several manifestations of its core tenet of perfection, all of which are expressed in unique techniques.

The exact workings of Reitai Shiranui-ryū's abilities are still unknown, though it seems that part of mastering the style is learning to empower every single cell in the user's body and to literally activate the user's latent reiryoku all at once, similar to that of Raian's Shundan technique which does a similar feat using Kidō, and because of this, the techniques of Reitai Shiranui-ryū can take a cumulative toll on the body of the user if used consecutively. Seohak explained that Reitai Shiranui-ryū is about "mastering the soul's resonance of the user, and the resonance of the souls of its enemies." Seireitou noted how similar the principle in Spirit Wave is to this paradigm. Besides this, not much else has been explained. Seohak went on to say that the Reitai Shiranui-ryū's techniques are so dangerous and powerful that it would secure absolute victory for whichever side wielded it in a conflict.

Spirit Wave
The Spirit Wave (気周波, Reishūha), also known as the Spirit Flow technique, is one of the three special powers developed by Shōyō Shakyamuni; considered to be the absolute pinnacle of Hakuda mastery. After his training in Asadal, Seohak was able to firmly instruct him on the technique as per Shōyō's instructions. Seireitou later refined these teachings and mastered the techniques himself. While the specifics of the Spirit Wave have yet to be explained, one of the principle aspects of the art is to master the ability of manipulating one's soul wavelength. Shōyō had once taught Seireitou that the primary distinction between opposing souls is the wavelength at which they emit. It is through these ripples that one's characteristics are carried and amass the traits, personality, and overall properties of each individual being. The practice of Hakuda is meant for the eventual mastery over the martial artist's soul and that once one reaches the field's pinnacle, the Spirit Wave becomes a martial art that can completely dominate the wavelength of oneself and their opponent(s), altering and manipulating it in whatever way they see fit. In attaining such a skill, Seireitou can perceive the wavelengths of any being within his line of vision or the scope of his senses, allowing him to make accurate judgments about the person's characteristics.


 * Nyūrō (入牢, "Imprisonment"): Invented by Seireitou during the process of refining the Spirit Wave, the Nyūrō is a technique that acts as a "soul lock", trapping certain substances composed of various units of energy and assuming their power and abilities. According to Seireitou, the key to the Nyūrō is for Seireitou to match the wavelength of his own soul with the substance he is attempting to imprison within him. Be it even the ability of an opponent(s), Seireitou can lock it within his own soul, having mastered his Hakuda to an unrivaled level, such that even if he were dealing with Kidō cast by someone of the Grandmaster level, once it enters his body, no amount of will can overcome his from inside his body. Raian himself noted that it is partially due to Seireitou's extraordinary tenacity in battle that makes his Nyūrō technique so dangerous to contend with. After "locking" it within, he can utilize the properties of the attack until such time that he reliquishes his hold over it and releases it from his body. Because of this, he may only use Nyūrō with a single substance at a time. This was originally designed for the purpose of entrapping Hanullim's sword form, his Zanpakutō, within his own body in order to utilize the Shikai form without the need to use the blade itself; allowing him to access those vast powers through his own person, in a medley of unique methods. Hanullim often notes his distaste for this technique, but Seireitou retorts saying that it is necessary because the former makes using him very difficult.


 * Kensoku (検束, "Arrest"): Not Yet Revealed
 * Sazanami (漣, "Ripple"): Not Yet Revealed

Through Spirit Wave, Seireitou refined its principles in order to create the Bonseok (분석, Korean for "Analysis").
 * Boonhae (분해, Korean for "Taking Apart"): Not Yet Revealed
 * Hae Sul (해설, Korean for "In-depth Study/Explanation"): Not Yet Revealed
 * Eungjoong (응용, Korean for "Practical Application"): Not Yet Revealed


 * Byonhwa (변화, Korean for "Variation"): Not Yet Revealed

Shiroyasha Persona
Through horrific circumstances throughout his life, having fought in a horrendous war and watching his beloved executed before his eyes, Seireitou had developed a sort of secondary personality within him that would rise to the surface whenever he would experience intense feelings of rage or sadness. Kamui, however, noted that this change in persona is most likely a reflection of his primal instincts due to the Sōzōshin blood coursing in his veins. While at first, Seireitou appeared to be completely unaware that he took on this sudden change, most likely due to being blinded by anger, he seems far more in control of these changes and aware of his actions during.

Change in Personality: Whenever overcome by his Shiroyasha persona, Seireitou's personality utterly changes. He is no longer humorous nor eccentric, but instead becomes serious and apathetic. It is likened to that of Kamui's constant facial expression, exhibiting an immense shuddering aura of coldness from the depths of his eyes as noted by Raian Getsueikirite, whom could not read Seireitou's heart whilst the latter was in this persona, despite the bond the two share as friends. Raian described it as a strange and foreign darkness that surrounded the man's being, completely unlike that of Seireitou, while Saori Sumeragi expressed a fear so great that it threatened to overwhelm her and crush her entirely. Most noticably, he develops an intense sadism that carries over into his conversations and even in his fighting. He demonstrates a complete and willing desire to preform certain acts during battle that would disgust or frighten almost any sort of opponent(s), such as castration and sadomasochism, to a point where it appears as though he finds some form of enjoyment and sexual ecstasy in seeking to preform such actions. Though generally wishing to inflict torture onto an opponent using his blade, he'll use his fingers to stab through an opponent's body and pull out a specific organ, such as aiming for the neck and pulling out their larynx or ripping out their spine part by part through finger-tip thrusts. He is willing to go as far as to tear off the reproductive organs of a male and shove it down their mouths or causing the sexual organs of a female to bleed out violently until they slowly pass out from hypotension shock and brutually violates their body. While doing so, his face reveals the incredible sense of pure ecstasy that he feels in the form of a frightening grin, doing everything possible to an opponent by forcing out every ounce of sickening pleasure and thrill he can from torturing them before utterly killing them in cold blood.

Fear-Inducing Spiritual Pressure: When in his Shiroyasha state of mind, just as his entire alignment changes, so too does the nature of his very reiatsu. It literally inflicts all those who feel the force of Seireitou's reiatsu with a deep sense of fear, slowly forcing them to surrender their composure to instinctive fear toward Seireitou himself and everything around them, causing those who feel the brunt of the spiritual pressure to begin allowing despair and doubt to seep into their minds and forces them to unintentionally lose control of all rational thought. He can even make victims suffer through hallucinations of all sorts of things, such as swords being thrust through their necks or the limbs of their body being ripped off. In most cases, such intense fear thrown at a normal victim would result in instantaneous death, their heart being incapable of dealing with a shock of such intensity. However, an individual's willpower can be used to resist this fear-inducing reiatsu to an extent, but it seems that even the strongest of opponents eventually succumb to the fear in direct proportion to the length of time they spend under the influence of the Shiroyasha's spiritual pressure.

Releasing of Suppressed Hakuda Knowledge: By his standing as the Hakuda Grandmaster of Soul Society, Seireitou is acclaimed to know all of the hand-to-hand combat styles as well as all of martial arts in their entirety. However, due to most of those martial arts being far too dangerous and lethal to be used, most specifically those arts that were deemed to be lost to history, he did to them which he had always done with his Shiroyasha persona; suppressing all of the thousands of styles he had known, keeping only a few known martial arts to his immediate use, the full extent of his Hakuda knowledge is released when his Shiroyasha self awakens. He, in turn, becomes far too dangerous an opponent, as the sheer amount of Hakuda styles at his disposal, coupled with his lack of morals and restraint as the Shiroyasha, makes him nigh unbeatable.

"White Curse" (白の呪い, Shiro no Noroi): Not Yet Revealed

Kitsune Lineage
As a Sōzōshin-born Kitsune, Seireitou is most commonly seen in his human-like form, despite the fact that the abilities of a Kitsune still present themselves in this aforementioned state through his Hakuda capabilities. However, he can take on his true form as a Kitsune upon personal preference, allowing him to achieve his truest power. In doing so, his hair lengthens and becomes far more untamed, with a pair of fox ears forming at the top of his head. Seireitou's eyes becoming a piercing yellow in contrast to the calm amber they originally were, while exerting an intense foreboding gaze from them, much like that of a predator seeking its kill. He is classified as a Kyūbi (九尾, "Nine-Tails"), and thus, nine magnificent white fox tails form behind him, completing his transformation.

Complete Transformation: Seireitou is capable of shape-shifting into a white fox with red markings at will, similar to the feline transformation utilized by Yoruichi Shihōin. However, unlike Yoruichi's transformation, Seireitou doesn't appear to be the same size as a standard fox would be, but rather large enough to allow another person to sit atop his back. In fox form, Seireitou can still channel his spiritual energy and move at incredible speeds, and due to his more agile frame, his speed allows him to move across narrow spaces that would be considered impossible in his real form. Speed-wise, he isn't restricted in the same manner that Yoruichi is in her cat form, but in fact, his speed is even greater. However, the trade-off is that his strength is hindered. His transformation also allows him a complete disguise, completely shrouding his spiritual energy signature. However, as demonstrated by Kamui, a master of Getsudō, it is possible to still distinguish his presence, even while in fox form.

Master of the Kitsune Abilities

Other Noteworthy Skills
Among the vast networks of his innate powers and abilities, there are certain skills that do not belong to any specific field of combat; some of which are unique to him.

Reihikari (魂の光, literally "Light of the Soul"): After mastering his Bankai, Seireitou had applied the concepts of utilizing his reiatsu as a source of energy instead of merely projecting it as a spiritual pressure. By cupping his hands down at his waist, in which the hands are at least very close or touching one another, the latent reiatsu is converted from spiritual pressure into a mass of pure energy, typically taking the form of a uniform sphere, to which Saori Sumeragi had commented on the aura that the energy was emitting, questioning if it was "really reiryoku", subsequently noting that it was not even a form of Kidō eventually reaching the conclusion that it was the "very force of his tremendous reiatsu, taking a physical form at his palms." The hands are then thrust forward to shoot out a streaming, powerful beam of energy. The attack can also be used, generally under extenuating circumstances, with just one arm or even with the legs. While the strength and effectiveness of the technique is dependent on the amount of spiritual energy Seireitou puts into the attack, it is typically a very powerful attack, capable of literally disintegrating an opponent if enough strength is put into the technique. The destructive capabilities only increase with the more power that is pumped into it, though its power was able to completely decimate a large portion of the Seireitei at half-power. However, what makes the Reihikari such a dangerous technique is that it is literally the manifestation of Seireitou's will, just like that of his Hakuda styles, that takes the form of pure spiritual energy; although nothing could be farther from the truth, as this technique can obliterate obstacles that normal attacks fueled by reiryoku can not hope to do. In some cases, Seireitou will chant the words "Rei-Hi-Ka-Ri" while charging the technique, and then shout "Hah!" when firing the technique. Seireitou has shown various methods to using this technique, very well making this technique the most versatile of all attacks in his arsenal.


 * Multi-Focused Beam: It is possible for Seireitou to further focus the latent energy that powers the Reihikari technique, forming a dense beam of white reiryoku which fires from the palms of both hands that disintegrates everything and anything in its path. The attack quite literally vaporizes anything within its blast range, even other techniques that are composed of spiritual energy, leveling the targets until nothing remains. Seireitou has also demonstrates a far more controlled and significantly smaller version of this focused Reihikari by using a mere finger to execute the attack, forming a laser beam that fires from the fingertip and strikes through the target with strict ease.

Energy Construct (構造, Seishōkōzō): Though it does not have a specific name, Seireitou had demonstrated the ability to use his Hakuda Grandmaster technique, Hōkōryū, to actually generate massive structures or constructs that follow an energy flow of his design out of the energy that he has successfully imposed his will over and took advantage over for his own devices. This was first displayed during a full-scale battle against several powerful beings, in which he drew in the attacks of each and every failed attempt at overwhelming the silver-haired man with brute force, and created a construct of this energy around his person that stood for the purpose of a nearly invincible defense; in direct proportion to the amount of energy drawn into it. Bending and curling around his body, the Hōkōryū begins to redefine the original energy flow of the absorbed energy into what Seireitou himself deems it to do, turning it into a power that is all his own. Seireitou claimed that Kidō would most likely be the most difficult to impose his will over, to the point of near impossibility if he should face off against someone of supreme master-class skill, although once it is ripped away from their hold, it becomes infused into the existing construct. He works around this issue by waiting for the Kidō spell to be destroyed, either by his counterattack or the explosion that it causes, and uses a flick of Hōkōryū to bend forth this energy and collect it into the construct. Based on how much power is put into it, the construct may take on various forms, serving a medley of purposes. Seireitou has called the constructs he creates "extensions" of his martial will through his absolute skill of Hakuda, meaning that if one attempts to take control, they would most likely be in danger of losing command of their own minds; should they be lacking in willpower when compared to Seireitou's own will. In some cases, he may even use his own attacks and recycle the energy spent into generating the construct, making it thusly so that none of his attacks are wasted movements. While his own spiritual energy is white in coloration and the colors may differ between the various energy sources, the contructs almost always take on a dark blue color. Any form of flickering between energy colors normally signifies that Seireitou is in a struggle of wills to maintain his authority over the structure, something that is normally resolved rather quickly.
 * Ribcage (胸郭, Kyōkaku): The initial stage of the construct is normally crafted into what appears to be an energy shield shaped like that of a elegant ribcage, surrounding Seireitou's body in a sturdy defense that assumes the properties of whatever energy was used in forging it. However, in this stage, it is still fragile against strong assaults. Despite this, it appears to have rather significant defensive capabilities, standing up to several Zanjutsu strikes without faltering. Most noticeably, it could effectively block Hitotsume: Nadegiri by the blade of Kintarō Hijikata. In its first demonstrated use, Seireitou was able to use the lightning from Shindō Takuji's Zanpakutō ability to create the basis of the shield. Because of this, the ribcage allowed for various electricity-derived applications, to be accessed by Seireitou's own whim. Because of its shape and form, Seireitou can effortlessly imbue the ribcage construct with his own techniques, such as using the Shiroenryū to provide a flame defense, shielding himself with white fire. In addition to the damage it can inflict through contact and through directing the flames via Seireitou's command, this has the psychological effect of causing melee enemies to hesitate when deciding whether or not to attack him.


 * Upgraded Form (次に条件, Tsuginijōken): Upon the further infusing of redirected energy, the ribcage begins to become far more defined in its structure and starts to form the other aspects of the body in order to become far more humanoid in its appearance and proportionally larger, enough to seemingly tower over the castle-like dwelling of Seireitei. Structures such as arms (anywhere between two to six arms at any given time, depending solely on the energy available), an entire torso extending from the original ribcage, and even a two-horned skull begin to form as it takes on a more demonic appearance than one might have originally anticipated, bearing elongated canine teeth in its lower jaw bracket and two tusks growing from said jaw. With further energy, energy lances can be crafted and held by each hand of the construct to be used for bladed combat. With a single strike of any of these lances, aggravated injuries can be inflicted upon even the more durable opponents. They can also be thrown via the construct's hands, resulting in incredibly destructive explosions upon striking their target. Seireitou jokingly admits to having difficulty in controlling their trajectory, due to claiming that he "missed" his opponent and would "try again", despite the fact that he could effortlessly manipulate its path via Hōkōryū. Through these lances as well, he is capable of preforming specialized techniques that can cause tremendous damage; even using the Sanjū Tomoe Happa spell, which he had customized in order to instead produce a chain of reiryoku-threaded red magatama energy projectiles which detach themselves and fire off individually in various directions (though he can choose whether or not to have them linked upon generating them); even manipulating their path using Hōkōryū to confuse his opponents as to their direction. Even a single projectile can produce notable destruction, but when the original version of the spell that consists of three energy tomoe bound together by a single circular thread is utilized, it has enough destructive power to tear through a master-level cast Dankū spell. Kujaku Kuchiki had noted Seireitou's use of the spell to have far exceeded his own abilities with the same technique. He has even shown use of channeling the Reihikari through the tips of the lances, firing them as if they were Cero blasts, although to a far more massive scale. The construct, at this stage, as displayed the capability of standing up to even several simultaneous high-level Kidō spells, dealing the enormous structure only a couple of cracks while subsequently drawing in that utilized energy and repairing the damage it caused. Seireitou stated that the only way to destroy the construct at this stage would be to deal it with several continuous and simultaneous physical attacks of considerable force, as he could simply use Hōkōryū to deal with any form of energy-based attack and subsequently empower his construct even further. Because it is developed in majority part to Seireitou's materialized and imposed martial will, it is controlled via mental commands and operates according to the latter's whim. It is whilst in this form that Seireitou can consistently change and upgrade the appearance and properties of his construct.


 * Completed Form (既成条件, Kiseijōken): According to Seireitou, the construct's power is not absolute until he stabilizes the energy flow and completely assumes dominance over the energy used in its conception. In doing so, the construct literally becomes imbued with his will and a part of his being, transforming once again to further this point. It assumes more animalistic feature, looking less like a skeleton barrier and more like an actual living creature, forming nine large tails that make it appear like that of a matured kitsune as its body resembles layers upon layers of refined energy flow, bearing four arms now on all sides of its torso, two of which wield energy lances that have been further refined to resemble katana. Each of these two katana blades are capable of devastating Zanjutsu combat, as a single swing possesses more than a sufficient amount of force behind it to level an entire area of enormous rock exposures. Seireitou himself claimed that these sword attacks could wipe out an entire mountain range if he should wish. The construct's demonic face now resembles a tengu, becoming even further "alive" in its overwhelming appearance. Its size has also increased to the point that it can rival even a mountain. Seireitou himself, should he wish to, can leave its protective innards and stand atop of it in order to confront his opponents. Additionally, he is also able to order the creature mentally and have it attack his opponents. It appears to have the power to form an orb-shaped black Reihikari attack at its mouth, firing it off in a large-scale beam that can, according to Suzaku Kawahiru, quite literally destroy even the Seireitei in a single blow. It is presumed that its defensive capabilities have skyrocketed from its previous form, although to the extent at which it has is currently unknown.

Master of Nèidān Shù: The practice of Nèidān Shù (內丹術, Chinese for "Internal Alchemy").

Zanpakutō
For the manifested spirit of Hanullim, see Hanullim (spirit). Hanullim (하늘님 (空様), Hanūrimu; Korean for "Sole Being of Heaven", Japanese for "Lord of all Skies") is the name of Seireitou's Zanpakutō, which is the manifestation of his Sōzōshin powers as well as his status as a Kitsune. It takes the appearance of a nōdachi when used, with a white hilt sporting unique complex shapes on it. The top edge of the nōdachi possesses interesting kanji, which Seireitou says represents the four souls of the Shinto philosophy of Naobi (直霊): Aramitama (荒魂, Courage), Nigimitama (和魂, Friendship), Kushimitama (奇魂, Wisdom) and Sakimitama (幸魂, Love). The meaning of the symbols lies in the Shinto belief that when all four of these traits are united in one person, they unite to form a powerful balance within the soul that can be used for good or evil. Even when in its sealed form, while sheathed, the Zanpakutō emits a powerful aura which tends to fluctuate in its nature. After training for several years and facing various difficult opponents, Seireitou's Zanpakutō had continuously undergone changes of noteworthy significance, to the point that its power has become obscenely strong, great enough to be one of the most destructive Zanpakutō in all of Soul Society's history. It is due to this that most opponents fear the strength of Hanullim, even when it is sealed. Seireitou claims that Hanullim is one-of-a-kind, in that it is the only "Interaction-type" Zanpakutō in existence. Like all other Zanpakutō, Hanullim has a personality of his own. However, unlike other Zanpakutō, this personality shines through in battle and prevents Seireitou from fighting with its full power until Hanullim is in the mood for it. Because of this, Seireitou considers it a "pain in the ass" to work with "him".

Shikai
It is released by the command, "Radiance of redemption that leads us to sunrise. Let hallowed prayers be spoken ever more! Let there be light!" (黎明へと導く覇者の煌たまえ聖なる祈り永久に紡がれん光あれグランドクロス, Reimei e to michibiku haja no kirameki yo. Seinaru inori, tōwa ni tsumugaren! Hikari are, gurando kurosu!); When releasing his Zanpakutō, he holds it in an outstretched arm in front of him with the blade pointing down and declares the release command. Hanullim forms into a sleek, medium long-sized sword. The grip has a gentle decorative hand bends forward at the end with a white tassel dangling from the pommel. Instead of a cross guard, there is a dark gold U-shaped decoration covering the first three inches of blade, with a flower petal design just as it meets a black string wrapping. At where the decoration makes its curve, on both sides, the kanji for "yin" (陰) is depicted on one side while the kanji for "yang" (陽) is on the other side. The string is wrapped thrice around the hilt, with a three-loop bow on one side and a decoration on the other that consists of connected crescent yin and yang components, connected to one another, crescent point-to-point. Hanullim's blade is shown to be a very light gold with a silver-edge. It is also straight and slim, with the tip ending in a slanted razor-like edge instead of being tapered to a point. The release of his Zanpakutō comes with an extreme release of spiritual pressure affecting all in the area, and can be felt for miles upon miles across all of Seireitei.

Hanullim's power is best defined as "the manifestation of all forces". Even in the beginning days of all things spiritual and physical, the term force denoted a change in a substance due to some kind of action; whether it was a result of some divine intervention or even mortal involvement, a force could create a change in a substance's otherwise static existence. Therefore, Hanullim is a Zanpakutō that manifests a type of force and unleashes it onto the world, causing and creating a specific sort of change. Saori Sumeragi had noted that, in many ways, Hanullim is a Zanpakutō which perfectly embodies the essence of Kidō. However, Seireitou has described it differently. Martial arts is about the application of one's force, of both the internal and external variety. When no such application and skill is utilized, martial arts is reduced to nothing but the pure and raw unrefined release of force. That is what Hanullim represents. And Seireitou serves as the applicator of this force, acting as the martial artist that guides the force and tames it as their own, rendering the very force itself as if it were his own fist. Hanullim allows the use of this power by Seireitou through a specific set of techniques that correlates to an individual force which will result in a respective change onto the world when utilized. The Shikai is the most basic expression of this power. Hanullim has several distinct techniques, which are all named as verbal commands followed by the sword's name, respectively invoking a specific and unique force that causes a particular change onto the world when activated. Shunsui Kyōraku noted that the most fearsome aspect of Hanullim's power is that whenever the Zanpakutō comes into contact with a power much greater than its own, it uses that power to evolve and obtain new techniques which serve the purpose of strengthening Seireitou's arsenal. In this regard, Hanullim acknowledges that the force of the opponent has taken a significant change onto its own awareness and understanding, meaning that it must now respond by developing a power to oppose this force. To that end, Hanullim is capable of finding a way to challenge any adversary or obstacle, hence Seireitou's claim that Hanullim is "a Zanpakutō that challenges fate." However, on its own, this is a very limited power which has extremely few possibilities for application. Seireitou explained that Hanullim merely manifests these forces but that is the limits of its capabilities. Because these forces are so absolute in their existence, it would be impossible to fully control their paths and actions entirely. On its own, Hanullim can do very little to influence these forces once they've been unleashed. However, when Seireitou and Hanullim cooperate, it is only then that the sword's true power over Interactions (相互作用, Sōgosayō) is realized.

The "Seiryoku no Tekkō" (勢力の鉄工, "Armguard of the Forces") is essentially the "true form" of Hanullim's Shikai, in which its powers are at their greatest level of efficiency. The Zanpakutō takes on the form of a pair of black tekkō arm protectors which are worn almost consistently and can normally be hidden somewhat under his bell-shaped sleeves. Essentially, the way this union works is by Hanullim manifesting the force while Seireitou uses his Hakuda capabilities to provide a shape and form to this power, allowing for the normally uninfluenced forces released by Hanullim's abilities to become refined and controlled through Seireitou's own will, meaning that Hanullim can actually be utilized appropriately in combat. While these forces are considerably weaker and lack absolute reign over the substances they enact a change on, due to being manipulated by an individual's will, they become far more efficient and are applicable to an almost limitless degree of situations. Quite literally, each force can be manipulated through sixty-four individual motions, allowing for that many different unique applications for each and every force that Hanullim manages to manifest into being. It becomes possible to combine multiple motions among these sixty-four to create even more complex techniques, subsequently requiring a higher level of concentration in direct proportion. Because the forces that the Zanpakutō manifest are generally composed of neutral energy infused with his and Hanullim's own spiritual energy, they are susceptible to enemy manipulation; making it an extremely suicidal Zanpakutō to use recklessly against someone of equal skill. However, once Seireitou manages to ascertain control over the respective force with the Seiryoku no Tekkō form of Hanullim, it becomes absolutely linked to his own will; in other words, it causes the force in question to become a part of Seireitou himself, as if it were his own fist. In most cases, Seireitou is capable of only achieving total command over two forces at any given time (due to having the tekkō on both arms), meaning it becomes impossible to use more than two forces during any individual fight unless Hanullim itself decides to replace a given force with another force of its choosing; something completely out of Seireitou's own control and often results in screwing up Seireitou's battle strategies at times, further adding to the fact that it is a very troublesome sword to work together with. In addition, Seireitou can choose to switch out a certain force for another, though he must wait at least fifteen seconds before the newly chosen force becomes available for use; during which time, whichever tekkō is assigned to that force becomes inactive, allowing certain opponents a window of opportunity.

Hanullim is a very malicious and deceptive Zanpakutō, a direct consequence to Seireitou's own chaotic nature as a person, often lying and exaggerating about certain things; making it a very troublesome sword to work with. The latter had concomitantly stated that Hanullim is also very lazy and that it takes a "significant level of motivation" to make the Zanpakutō awaken, meaning that even when released into its Shikai and Bankai states, very little of its power can ever be accessed at a given time unless Hanullim himself appears to be "in the mood" for it. However, the true danger in the sword's mischievous nature is that the forces it can manifest are not simply changing the world around it but also influencing its master, Seireitou, every single time the sword's power is accessed. While there appears to be some level of control over this, due to Seireitou's vast centuries of experience and expertise with using Hanullim, the latter has had a very significant effect on its master. It has been stated that it was due to Hanullim's inference with Seireitou's instinctive subconscious and aware consciousness that led to the birth of the latter's Shiroyasha persona, and that consistent use of the Zanpakutō's abilities would prompt the Shiroyasha persona to arise within Seireitou; emphasized by a far higher degree during the use of Bankai. In order to prevent such a disaster from occurring, Seireitou took to training in Hakuda and subsequent disciplines, therefore prompting him to forgo the need for Hanullim's powers. The result of this not only made it so Hanullim would not be necessary to handle most opponents but also provided Seireitou with a level of self-control that can keep the harmful effects of Hanullim's power from affecting him to any further degrees when the sword's power is in use.


 * "Kirisaki, Hanullim" (逃げる空様, "Tearing Asunder, Hanullim"): One of the forces most often generated by Hanullim, the "power of destruction" (破壊力, Hakairyoku) is manifested as a corrosive green electrical discharge that breaks down anything and everything that comes into contact with it as it races throughout its path of destruction. Shōyō explains that Hanullim continues to break down whatever it may cut while this technique is in effect, until it exists no more. The relentless nature of this force results in a widespread chain of destruction that reduces anything caught in its wake to crumbling remains, to where the destructive effect persists and transfers to anything that remains, destroying them in their entirety. It is because of this particular feature that Hanullim proves to be a bane to Hollow and other beings of similar properties, as it prevents them from absorbing or reabsorbing other Hollows or parts of themselves that were cut by the sword without risking being destroying themselves. The power of destruction seems to also negate most forms of instantaneous regeneration, although a sufficiently effective one may be able to slow down the effects of the technique to some degree; though it will most likely be doomed onto utter destruction. If there are any significant limits to the effects of the corrosive power, they are not known; even the fully transformed body of Datara was unable to stop or quench the effect and only avoided it by abandoning pieces of his own demonized body to destruction. The Quincy's Blut can not resist its power for long, only managing to keep it at bay before it eventually threatens to tear them apart.


 * "Kirisaki — Saezuri, Hanullim" (逃げる囀り空様, "Tearing Asunder — Chirping, Hanullim")


 * "Kirisaki — Ōnoyoroi, Hanullim" (逃げる鎧着用空様, "Tearing Asunder — Armor Wearing, Hanullim"): By using the Seiryoku no Tekkō form of Hanullim, the Zanpakutō generates a powerful field of a destructive and corrosive green reiatsu that is so powerful, it is sometimes mistaken for green-colored flames enveloping Seireitou's body and tekkō arm protectors. It produces an aura so corrosive that it is considered impossible to lay a hand on Seireitou's person, as even nearing his body, whether by physical body or a weapon, will cause anything touched by the green reiatsu to be instantly broken down to mere reishi particles. Because of this, once a victim has been caught by the green flame-like reiatsu aura, it is impossible to stop the corrosion as it not only disintegrates the point of interaction, but the disintegration effects will also spread over to parts detached as well, as if the technique forms a net of corrosive flames that seeks similar energy sources. As such, it is highly difficult to avoid the effects should it be inflicted upon a body limb, as even cutting off that body part will cause the flames to persist onwards to break down the entirety of that energy signature. Raian noted that Seireitou looks like an "angel of death" as the aura flows up his body and reaches outwards to appear as two large wings. Because it is a very complex technique that requires a considerable amount of concentration, the corrosive aura requires a specific amount of preparation time, but once enacted, it shall not fade away until Seireitou deems the ability to end.


 * "Kirisaki — Hakaiō, Hanullim" (逃げる破壊王空様, "Tearing Asunder — Destruction King, Hanullim"): With the Seiryoku no Tekkō, Seireitou manages to contort the energy utilized, whether from his own reserves or from power gathered from others through his Hōkōryū technique, for his Energy Construct ability which turns it into a manifestation of the Kirisaki ability. In doing so, the construct's structure changes drastically, becoming a light green in coloration, while growing to even larger proportions as it now stands taller than the entirety of Las Noches by a significant degree, with its mouth obscured and a cloak-like armor adorned over it that masks its bodily appearance. It is noted to be "aflame" with pure strength, by many that have seen it, and according to Seireitou, a single wave of its hand can vanquish everything within four kilometers. He considers this technique to be one of the strongest abilities that Hanullim's Shikai can generate. The construct becomes a manifestation of the true "power of destruction", as its mere presence spreads a green corrosive discharge through the air and all that it physically comes into contact, seeking to crumble it away until nothing but ashes remain. It most commonly seems to manifest this through a seemingly harmless green mist that spreads outwards from the construct's body, weakening the consistency of all things that become enveloped. Seireitou can willingly alter the concentration of the construct's mist, making it strong enough to actually eradicate anything that even so much as touches it. The longer it remains active on the battlefield, the more that opponents feel a sort of pressure surrounding them that threatens to destroy their souls the longer the fight continues with the Hakaiō present, adding a sort of psychological effect which causes most foes to lose nerve, prompting them to give in to their fears and doubts which leads to their abilities and concentration being severely hindered. Seireitou is capable of having the structure form an orb of green spiritual power in its hands which is then released as a beam of destruction, leaving nothing remaining in its wake. Whether it can also form swords made from reiryoku, like the original construct manages to do, or not remains unknown.


 * "Saishū, Hanullim" (採集空様, "Gathering, Hanullim"): As the force that embodies the "power of absorption" (吸収力, Kyūshūryoku), this is a technique that allows Hanullim to draw upon all energy that exists within the range of the Zanpakutō. It quite literally imposes the force of absorption onto the world around it. Whether it'd be active energy, such as the attack of an opponent, or stationary potential energy, such as the reishi that composes spiritual structures and exists in the atmosphere, Hanullim draws this power into its blade and empowers Seireitou by a proportional amount. In regards to the attack of an opponent, whether it'd be a Zanpakutō technique, a Hollow's technique, Kidō, and even Quincy arrows, anything that is classified as reiatsu/reiryoku or uses reiatsu/reiryoku as its primary component is susceptible to the Saishū ability. However, what makes this technique unique is that, in the case of absorbing an opponent's technique, Seireitou can utilize that power by a particular amount of times, proportional to the amount of energy that was absorbed from that person's attack. Kidō is no exception to this ability. Ideally, Seireitou uses his opponent's powers, for a limited time, against them while not needing to waste his own spiritual power. At first, this technique was extremely difficult in utilizing, but after training to harness seijō reiryoku, the technique became second nature in accessing. This efficiency evolved to a point that it can rival the absorbency rate of those who use the Quincy: Letzt Stil form. However, it has been noted by Seireitou that the raw technique requires him to be in a Jinzen meditative stance in order for all forms of energy to become susceptible to the sword's influence.


 * "Orokana, Hanullim" (愚かな空様, "Playing Around, Hanullim"):

Sōkyoku Implantation
"Hitenmai, Hanullim" (火天舞空様, "Dancing with Heavenly Fire, Hanullim"): Prior to his death at the hands of Yhwach, Genryūsai Shigekuni Yamamoto had named Seireitou as the inheritance recipient of the Sōkyoku (双殛, "Twinned Punishment") blade in the event of his demise; the will stating that "the blade of the phoenix flames shall be sheathed within his [Seireitou] soul." After being given the shards of the Sōkyoku by Captain-Commander Shunsui Kyōraku, Seireitou began the extensive process to forge them into Hanullim's blade whilst training in Reiōkyū. In allowing the physical blade shards as well as the spirit within the Sōkyoku, the Kikōō (燬鷇王, "Blaze Fledgling King"), to merge with Hanullim's blade and inner spirit, the power was truly assimilated into the Zanpakutō's design successfully with the forging method used by. This would result in Hanullim becoming the successor to Ryūjin Jakka as the most destructive Zanpakutō in all of Soul Society. Hanullim comically would later refer to the Kikōō as his "pet". As a result, the flames of Sōkyoku had changed from their yellow crimson-esque color to a smooth white coloration that is likened to Seireitou's own spiritual energy. Despite being rumored to have the might of a million Zanpakutō, the strength of the Sōkyoku on its own is comparatively minuscule. Only when it is wielded by a heart that is unyielding and resolute to a sufficiency that will allow the holder to hold those flames without being destroyed by them can the true power of the Sōkyoku be unleashed. Hanullim's power to manifest forces is what allows for Seireitou to manifest the force of Sōkyoku, unleashing magnificent white flames that bear an immense intensity that can seemingly destroy any adversary.

During the tail-end of his training in Reiōkyū, Seireitou underwent the necessary training needed to wield the Sōkyoku's power from within Hanullim. Despite being forged into his Zanpakutō, Seireitou can still access the Sōkyoku even without releasing his Shikai form. He is capable of manipulating the degree of intensity and heat in which the flames possess, as the power of the Sōkyoku allows for Seireitou to ideally vaporize a victim's soul with a single swing of the blade, with its offensive and defensive power said to be equivalent to that of a million Zanpakutō when its true might is mastered; though, Seireitou admits that he has yet to realize Sōkyoku's final abilities. Additionally, this power increases by tenfold upon piercing through the target. What makes these flames unique is that, similar to how normal flames feed on oxygen in the living world, these flames feed on and  in the exact same manner, growing stronger and fiercer the more they feed upon as they consume all spiritual sources until everything is rendered onto nothingness. Seireitou has shown to be capable of emitting a visage of Sōkyoku's true form as a massive, phoenix-like entity through his reiatsu. Even when Hanullim in its sheath, Seireitou can emit the flames of Sōkyoku from his person as if it were his reiatsu; although its power when being exerted in such a way is merely an iota compared to when the blade is actually drawn. While being used in a released Zanpakutō state, the flames completely envelop the sword in dense white fire which also fans outwards in two opposite directions from the center of the sword's guard. However, like the other forces generated by the Zanpakutō, these powerful flames can not be tamed unless Seireitou utilizes the Seiryoku no Tekkō form of Hanullim. In the form of Bankai, the powers of the Sōkyoku are enhanced and perfected to almost transcendent levels.


 * Tenchi Kaijin (天地灰尽, "Heaven and Earth End in Ashes"): Not Yet Revealed


 * "Hitenmai — Kireru, Hanullim" (火天舞切れる空様, "Dancing with Heavenly Fire — Snapping, Hanullim"): Seireitou manages to center and aim compacted bursts of Hanullim's white flames via the act of snapping with his thumb off of his index and middle fingers, with the arm that bears the tekkō assigned to the Hitenmai's force. In this sense, by aiming his fingers toward a target and snapping, he can create a spark of energy that erupts into flames wherever he deems his target. Seireitou explains that he focuses spiritual energy in both his thumb and his two fingers, and when he rubs them together, he causes the two sources of energy to collide with each other, and with the snapping motion, he directs the resulting collision toward his target. Essentially, he modeled this technique loosely after the physics of how lightning forms during thunderstorms. While more centered than most of the other Sōkyoku techniques that Hanullim possesses, the result of the Kireru command's attack is still equally devastating as once it makes contact, it engulfs the target in burning flames depending on the size of the flames and the distance at which the technique was fired. Despite the explosive capabilities, Seireitou can also do pinpoint aiming, as shown when he was able to instantly burn up only Qiongqi's arm and left the rest of her body intact. Seireitou can utilize the two opposite abilities of Shiroenryū simultaneously, demonstrated when he used a compacted version of Kireru first to instantaneously boil the liquid in Taotie's eyes, causing excruciating pain, followed by an explosive Kireru to engulf the latter in a large explosion.


 * "Hitenmai — Ennyūyoku, Hanullim" (火天舞焔入浴空様, "Dancing with Heavenly Fire — Flame Bathing, Hanullim"): When Hanullim enters the Seiryoku no Tekkō form, the use of the white flames is represented by the tekkō arm protectors glowing with a fierce white light. They remain in this appearance until the Sōkyoku flames are dispelled by Seireitou's whim. Suzaku called it one of the strongest offensive powers to ever exist in all of Soul Society, great enough that not even the regenerative abilities of Arrancar can stand up to consistent assaults for long. Seireitou further refined this power after his training in the Murinne. When in use, an immense burning aura of white flames surrounds Seireitou which, when directed by his hands, can disintegrate nearly anything, reducing it into nothing more than ash. It has the additional effect of engulfing the surrounding landscape in white flames. Only powerful fighters such as Jūsuke Kannogi and Méi-Fēng can resist it, but even then only indirectly. It's power is enough to fight against the force of several Captains simultaneously. Though boasting unavoidability, the white flames has been avoided a few times, such as in the fight against Kamui. The determining factors seem to be motivation and skill. Seireitou's control over the white flames allows him to develop defensive variants of this technique. He has shown use of the technique by enveloping himself in a white flame aura, allowing his flight and movement to seemingly become more destructive, as he is capable of spreading his flames as he moves forward, becoming an "unstoppable spreading flame" as Kintarō Hijikata noted. By surrounding himself in the flames, he could provide an ultimate defense. As these flames are part of him, he may manipulate them via mental thought or even by directing their movement with his hands. By clapping together his hands, for instance, the flames form a large barrier of white flames that surround a number of selected targets, designated for the purpose of trapping opponents for long periods of time. Nothing much is known about the limits of its defensive power, though it possesses a rather immense duration and durability. It appears to act on its own accord, manipulating its own fire in order to ensure that its prisoners remain within its confines, even if means destroying them outright. However, it seems that if Seireitou is within range of the technique, he can mentally control its actions. By summoning these white flames in a different location, he can effortlessly shift himself to another location, in a manner akin to that of teleportation. Seireitou often uses this technique as a means of presenting his arrival to his opponents to grand effect. He is also able to use the white flames to displace his being when he is struck by a physical attack, essentially forming white flames out of any situation. These are, but, trivial uses of this power however. Seireitou can surround himself in a large pillar of these flames as well, similar to how the Vandenreich use Heiliges Feuer in the same way. In addition to the damage it can inflict, this has the psychological effect of causing enemies to hesitate to attack him.


 * "Hitenmai — Kajiarashi, Hanullim" (火天舞火事嵐空様, "Dancing with Heavenly Fire — Firestorm, Hanullim"): Not Yet Revealed


 * "Hitenmai — Janenshō, Hanullim" (火天舞邪念暑空様, "Dancing with Heavenly Fire — Sinning/Depravity Hue, Hanullim"): Similar to Sode no Shirayuki's first technique, Seireitou forms a white circle of light somewhere within the vicinity of his target (often done by stabbing the ground firsthand). Everything within the range of this circle's area becomes enveloped by a tornado of white flames that completely surrounds an opponent(s). Within the very instant of being caught, the flame emit a heat from within this tornado that can completely evaporate even a being of considerable spiritual power, seeking to literally burn them until nothing of them remains, not even their soul, meaning those killed by the Janenshō have no hope of ever reincarnating. It is akin to how a Quincy kills their target. Koga Tensei called it the act of "burning the soul away".


 * "Hitenmai — Kiyome no Honō, Hanullim" (火天舞清めの炎空様, "Dancing with Heavenly Fire — Purifying Flame, Hanullim"): Not Yet Revealed


 * Shinka Shuhō (进化手法, "Sacred/Mystic Flame Technique"): There are a specific set of techniques that utilize the Sōkyoku flames in rather unique manners. When the forces manifested by Hanullim become tamed under Seireitou's will, through the use of Seiryoku no Tekkō, it becomes possible to further manipulate them in the same way Seireitou manages to alter certain Kidō spells, thus developing very mystical and distinctive abilities from the standard white flames. These are techniques of broad scope, being capable of application for a variety of purposes. Some of these cause the flames to change colors and even heat intensity.
 * Kanzenka Ban'nin (絶対化盾, "Absolute Flame Defense"): The white flames of Hanullim change colors, becoming the exact coloration of the Hōgyoku's center, and form a hexagonal-shaped shield of flames in front of Seireitou. These blue flames have innate repulsive forces that counteract the amount of force that comes into contact with it. This is due to the reishi particles that make up the core of the embers being unstable, changing their properties depending on the force that comes into contact with it. However, despite this defense being seemingly impenetrable, due to the reishi requiring an examination of the force that comes into contact with it to completely counteract it, it can only defend against one type of force at any given time. The shield was strong enough to block Raian's full-powered Getsuga Tenshō while only slightly eroding, after which Seireitou comments that he might have lost an arm were it not for the shield.


 * Kaun Shuhō (火雲手法, "Pyrocumulus Technique"): Based off of the fundamental idea of a pyrocumulus cloud, hence its name, it is a term referring to the set of techniques that utilizes Sōkyoku's white flames to produce lightning and electricity to devastating effect.

Bankai
Shinwaryeok Hanullim (신와참하늘님 (真如天実), Shinuwarioku Hanūrimu; Korean and Japanese for "Absolute Sovereign over all Skies"): When Seireitou initiates the Bankai release, he will glow with an intense yet fading white aura that outlines his body. Upon calling out his Bankai, Seireitou's body seemingly turns into white flames that combust, exploding outwards in an enormous explosion of white and black reiryoku whips, that finally fall to the ground as a thick dense rain of reiatsu all over the surrounding area. In this form, Seireitou takes on physical properties of Shinwaryeok Hanullim's inner spirit. His hair becomes more longer and flowing, with a dark red facelines running down the length of his face from both of his eyes, very similar in appearance to that of Ulquiorra Cifer's second release form. The hakama he normally wears does not appear to change whatsoever, though appears a bit darker in coloration, as his shihakushō takes on a more similar appearance to Hanullim's inner spirit. However, it appears to retain the lines present in his base uniform, though thinner and two grey bars instead of one solid black bar. He appears almost royal in his attire, his sleeves appearing to be bell-shaped with the addition of a gold bar running around the edge of the sleeve in a circular fashion. Seireitou's shoulders are draped in a see-through lavender veil, almost reminiscent in appearance to what the traditional mantle that Quincy would once wear. When truly enraged in his Bankai form, his eyes take the most dramatic change, as they appear to become a strange mystical white, with a shadowy black outline. The physical form of Seireitou's Zanpakutō remains very similar to his sealed state, becoming more of a japanese longblade daitō with jagged edges along the design of the blade. It also appears that the hilt has a white chain connected from the bottom of it, running down as it eventually reaches around his waist. The blade itself is durable enough to withstand several of Kamui's Bankai-enhanced Cero and even endure direct hits from Mūkade's massive Bankai. In both cases, the blade did not show any signs of damage. The blade has become dangerous enough to cause aggravated injuries in one single blow. Seireitou tends to loathe using his Bankai, going as far as to call it his "pain-in-the-ass Bankai release." After he had obtained mastery of his Bankai, following a fight with a much stronger Kamui, the form of the Bankai changed ever so slightly to form a white aura around his waist, which manifests as a furry long spiritual kitsune tail in the back, completely white with a black fiery tip. It appears that this tail serves as an indication of the level of spirit energy that Seireitou is utilizing at any given time. As a result, when the Bankai form is initially entered, he only has one tail, but can actually form up to nine white fox tails, an indication that he is using his Bankai at maximum power. Because of his acquired mastery, Seireitou can deem whether to dematerialize his Zanpakutō's blade form or to continue wielding it (when the former occurs, he can choose to rematerialize the blade), allowing him to fight with his sword and hand-to-hand whilst in Bankai, depending on the situation.

While Hanullim's power deals in manipulating and creating interactions of multiple types within the field of Seireitou's reiatsu, in Bankai, all interactions generated and operated by the Zanpakutō are focused onto Seireitou's being and his blade. They are compressed within him, in a way that Shinwaryeok Hanullim allows for Seireitou to "command all interactions by his own hand". Thusly, it is a Bankai that incorporates the interactions that Hanullim can influence within the blade. He can cause existences (whether they be made up of reishi or atoms) or forces to negate one another, repel them from eachother, and even fuse them together into one. In these aforementioned scenarios, the repulsion is often accompanied by an intense burst of what appears to be his signature white flames but rather is his immensely powerful spiritual pressure that gives off such an appearance. These are, as the Bankai spirit claims, mere examples of the fullest capabilities Shinwaryeok Hanullim possesses. Though the power of his Bankai goes far more deeper than simple "cause-and-effect" control, the true strength of Shinwaryeok Hanullim lies in the potential of interactions Seireitou is currently capable of utilizing whilst in his Bankai form. Over a significant period of exposure, even Soul Society can fall victim to its power and be destroyed. Even the Ōin, which grants its master the power of dimensional control, is said to pale in comparison to the devastating applications of Shinwaryeok Hanullim.


 * Power Augmentation: The full extent of his powers are still unknown but he managed to quickly overpower Hibiki Asakura in his Bankai form, despite not initially standing any possible chance against him prior to entering Bankai. Having mastered his Bankai, Seireitou's power reaches the prime factor increase of ten times that of his base spiritual energy level.
 * Overwhelming Spiritual Power: The spiritual energy and pressure of this form is simply unimaginable, as Seireitou's already immense spiritual power is significantly increased further upon entering his Bankai. Just his presence in this stage is so devastating, that he needs to hold back the full might of his reiatsu as so not to kill his allies. When using Bankai, Seireitou's reiatsu takes the shape of several black and white reiatsu wisps surrounding his body, as well as a large aura that rains down on the opponent. The wisps of reiatsu seem to serve the purpose of vibrating the reishi particles around him, being able to deflect opposing spiritual particles. Because the reishi vibrates at roughly nine million times per second, not even the Quincy's Seele Schneider can cut through Seireitou's dense reiatsu. Once reconstructed, Seireitou's spiritual power increases further. Now that his reishi is vibrating at further speeds, his power has become something completely new, having a unique feeling to it completely unfelt by any other.
 * Enhanced Shikai Abilities: Seireitou's Shikai abilities have been explosively supplemented, allowing him to utilize Third-Order techniques at the very instant of Bankai activation. One such power, "Ōnoyoroi, Hanullim", is put into effect upon the very instant that Seireitou's Bankai is activated but is normally unseen by the eyes of anyone else unless Serieitou himself wills it to be seen. In addition, the power of Hanullim's corrosive base technique is greatly enhanced, concentrating the sheer destructive power along the edge of the blade of the Bankai. In doing so, anything cut by the blade is disintegrated into absolute nothingness, bypassing the rate that the base Shikai technique was normally restricted by. The defensive power of neither the Blut Vene nor Hierro are not even capable of standing up against this power. In regards to the other Shikai abilities, Seireitou can utilize them in similar manners as he could before, addressing them with their respective commands and "Shinwaryeok Hanullim" instead.
 * Devastating Speed: His speed is enhanced astronomically, able to move great distances in an instant as if to displace himself. Seireitou's Bankai enhances his speed to the point that even captain-level opponents cannot register his movements. He was shown to match the Bankai-empowered Hibiki in terms of speed, being able to match and counter each and every one of the latter's attacks, being able to push Echo to his absolute limits of speed. He moves at such exceedingly incredible speeds, that Ryan once noted it almost seems like "the entire space around them slows down when Seireitou moves." Seireitou was able to overcome Raian's Shunkō-enhanced speed, and place his hand on Raian's shoulder nonchalantly, the very next moment. After overcoming his despair, his speed was further enhanced, as he seems to flicker from place to place using a flash of light when engaging in acts of speed; capable of dematerializing himself from one place and re-materializing himself at a distance by literally breaking down into white particle shards and reassembles himself, making a strange phaser-like sound when in movement.
 * Strength & Durability Augmentation: Seireitou has become strong enough to cause a shockwave after being knocked down by Echo. His skin and hands are also strong enough to catch and hold onto Hibiki Asakura's Zanpakutō while the latter is in his Bankai form without any damage. His strength has also vastly increased in strength to the point where Raian (prior to his fusion with Yamamoto) and Mashū's combined Bankai attacks have no effect at all. Because of this, he can withstand a level 90 destruction spell without suffering any severe damage. With little effort, Seireitou is able to cut off the right arm of Yokibō from his body; the latter commented that he cut through it "like a hot knife through butter." With Shinwaryeok Hanullim's reconstructed state, its blade's own force almost becomes inconceivable. It was shown strong enough to block several high-level Kidō effortlessly, and also cutting through the body of an Arrancar's hierro without needing Seireitou's own spiritual force behind it. After overcoming his despair, his strength has increased to the point where a single swing of his sword can level a mountain.
 * Enhanced Shiroenryū: Despite being a self-created Kidō style, it is integrated into the Bankai's design. Because of this, the full power generated by the immense flames of Shiroenryū are incorperated into the blade itself. It does not burn what it comes into contact with but rather it simply incinerates anything it touches, leaving no trace behind as those struck by it are rendered to smoldering ashes. Because of this, it can seemingly contend with the equally-destructive powers of Raian's own Bankai. When he chooses to dematerialize Shinwaryeok Hanullim's blade form, he can actually compress the immense powers of Shiroenryū to both of his hands, allowing him to fight hand-to-hand while retaining the same destructive power while also making use of the powerful flames in widespread scopes. It goes without saying that fighting this way causes the effectiveness of his Hakuda to become further enhanced.


 * "Shōjiru, Shinwaryeok Hanullim" (出す真如天実, "Reconstruct, Shinwaryeok Hanullim"): Whenever Shinwaryeok Hanullim meets another strong entity in combat, a fragment of that opponent's energy is taken by the Zanpakutō, which allows it to become stronger. The power that evolves inside of Hanullim (and subseqently, Shinwaryeok Hanullim) is displayed in the Bankai, in various unique techniques. Another unique characteristic of Shinwaryeok Hanullim is once it evolves to a certain standing, it will actually "reconstruct" its soul and ultimately the Bankai release. When this occurs, a large amount of spiritual energy flows out the mirror, surrounding Seireitou in a cocoon, which goes through the process of reconstruction. However, the entire process is time-consuming, and Shinwaryeok Hanullim warns Seireitou to only use it when fighting alongside comrades. The new capabilities that Seireitou is then capable of preforming are sealed into the Bankai, allowing for him to use it via this aforementioned technique. While Seireitou's appearance does not change whenever this technique is utilized, albeit the lavender veil around him has become golden, the Zanpakutō transforms into an entirely new appearance. Its blade has grown bigger, taking on the appearance reminiscent of a kitsune fang. What's more noticeable is that it is made of pure diamond, instead of steel as most Zanpakutō are comprised of. The guard is no longer visible, instead being made of a large tuff of fox fur, fitting the shape of the blade as stated. Its hilt is shown to be the very same used in Hanullim's sealed state, retaining a white color as opposed to a golden color in the Shikai. Dangun theorized that the fear of failing Shiori sparked the process of evolution, and the fear of death finalized the end result. In addition to the change in Shinwaryeok Hanullim's appearance, Seireitou's own spiritual power has increased by massive amounts, retaining its white color with the addition of black wisps of reiryoku. However, its true power is revealed when Seireitou harmonizes his soul with Shinwaryeok Hanullim completely; essentially, in other words, controlling the interaction between his mind and his instinct. When this technique is activated, the fur around Shinwaryeok Hanullim that makes up its guard lengthens greatly, wrapping around Seireitou's right arm, which hangs outwards after reaching his shoulder, hanging back like a tail. Most noticeably, Seireitou's spiritual pressure is seemingly weakened severely. In fact, it was a result of joining his reiatsu and reiryoku together, instead of throwing one away to strengthen the other attribute, to the point where that it literally forms an invincible armor around him, appearing as a thin white aura of spiritual energy. Raian expressed the feeling to be strange, as it would be one thing to complete throw away one's spiritual pressure, but to literally weaken it to such degrees is incomprehensible. His spiritual force, strength, speed, and durability have increased further, being able to easily fight on par with Datara's transcendent transformation. When using Shikon Hisakiten, it appears as a massive amplified slash of white spiritual energy that covers the surrounding area and brightens the sky to the point of blinding weaker opponents, damaging anything caught within the light.


 * "Hyūzu, Shinwaryeok Hanullim" (ヒューズ真如天実, "Return as One, Shinwaryeok Hanullim"): Not Yet Revealed


 * "Shūryō, Shinwaryeok Hanullim" (終了真如天実, "Finish, Shinwaryeok Hanullim"): Not Yet Revealed


 * "Yōsohoji, Shinwaryeok Hanullim" (要素保持真如天実, "Elements-Retaining, Shinwaryeok Hanullim"): Not Yet Revealed


 * Beongae Janggun (번개장군, "General of Lightning"): Not Yet Revealed


 * Byeorak Janggun (벼락장군, "General of Thunder"): Not Yet Revealed


 * Hwadeok Jingun (화덕진군, "General of Fire"): Not Yet Revealed


 * Pungu Dosa (풍우도사, "Master of the Winds and the Rains"): Not Yet Revealed


 * Okhwang Sangje (하늘의왕, The King of Heaven): Not Yet Revealed


 * Ōhirumenoshī (大日孁貴神, "Great Spirit Who Shines in the Heavens") is a technique acquired from the Bankai form of Seireitou's Zanpakutō, Shinwaryeok Hanullim. While being in his half-dead comatose state, Seireitou was plunged into his inner world and forced to confront a demonic form of Shiori. This was because Shinwaryeok Hanullim explained that Shiori's death was the source of Seireitou's "despair", and because he allowed himself to fall into sorrow, his power began to decrease slowly until he would become a hollow shell of his former self. By finally accepting the despair and turning it into power, he was forced to confront a composite form of Shinwaryeok Hanullim and Sanagi. However, instead of battling the being, he had to accept Shinwaryeok Hanullim's blade, and be ran through by it. The blade, in turn, didn't harm him since it was his blade. Seireitou completed the interaction between his emotions and state of mind, with his spiritual power. This technique is the manifestation of this interaction, in which he becomes Hwanin (한인 (神の主); Korean for "Heaven Emperor", Japanese for "Divine Lord"). The usage of this technique is extremely dangerous, as it can cause strange interactions that are not within Seireitou's control. In this form, Seireitou's appearance changes drastically. The tear-like marks under his eyes that appear with Bankai increase in size and turn into a darkened silver. His silver hair becomes longer but much more tame, attaining golden armor which is styled to appear like japanese royalty. The chest plate contains sapphire embedded, which also extends outwards toward the shoulders, where the armor ends in two more sapphires on each respective side which hold up a long white cape. On his back, two large solid-gold wings with designs similar to the sheath of Hanullim. The inner edges of the wings are connected by a golden arc bar. Seireitou permeates with dense white reiatsu, mostly around his right arm.
 * Miryōkanna (魅了カンナ, Godless Heaven): Seireitou generates a white blade out of seemingly nothingness. Its appearance heralds a massive storm of white flames to gather above him, in which a large dense Sun descends slowly from the clouds. Seireitou is then able to direct the attack downwards, damaging anything caught within the wake of the massive sun. The flames then recedes, dissipating into the sky. However, Seireitou has also shown that he can focus the white sun on his person, absorbing the force of the flames to the point where his power multiplies by several factors for a limited amount of time.


 * Sokoshin'nyū (浸透侵入, Penetrating Divine Light): Seireitou calls forth an orb of spiritual power which he holds out in front of his two hands, which send a pulse of energy throughout the surrounding area. However, it is capable of being directed toward one opponent. It literally tears apart an opponent, by tracking down the smallest fragment of darkness within them; these can also apply to feelings of doubt or fear, or even arrogance. Those on the battlefield who witness the technique, such as Raian, note that they feel safe and protected, as if there's nothing to fear.


 * Taegeuk (태극, Yin and Yang; literally "supreme ultimate"): Not Yet Revealed

Bankai Stage 2
After training in Reiōkyū, whilst engaged in various sparring matches with Gamma Akutabi, Seireitou was able to achieve the Bankai Stage 2 (卍解二准, Bankai Nijun). Because Stage 2 is a state achieved through intense emotional content, it is presumed that he chose to train within the Reitoro in order to produce such an effect during his training; however, the actual method at which he reached this state is unknown as he is not shown actually awakening it during training. Gamma did note, however, that the surge of power that accompanied the initial unleashing of Seireitou's Stage 2 was sufficient enough in shaking the entire Shōkyūden palace, even while the training had occurred within Reitoro. Instead, its first use was displayed in the fight against Sōsuke Aizen, Yhwach, and Tadoku Getsueikirite during the War of the Worlds. In this form, Seireitou does not undergo a vast change in appearance as his clothing becomes far more refined and distinct, his attire taking on a more royal form as it now remsembles an unusual form of shenyi which would be more suited to a warrior that fights using unarmed combat. It is complete with a rope-like belt that keeps the uniform tied together. Just as in his normal Bankai form, the energy kitsune tail that is generated is maintained, although it can be lengthened and its density can be increased to serve defensive and offensive purposes. The integration of Sōkyoku becomes far more evident in Stage 2, as two huge wings composed of intense white flames erupt from his back, prompting others to call them the "Wings of White" (白の双翼, Shiro no Sōyoku). Both wings appear to generate amazing degrees of heat, but the true danger of their existence is that they emit a very unusual spiritual wavelength, akin to that of radiation that a luminous sphere of plasma held together by gravity would release, which bestows immense effects onto the surroundings that cause strange anomalies to occur in accordance with the techniques used in this form. Seireitou is acclaimed to have first theorized the existence of such a form before Raian had actually attained it. It has been noted among both allies and enemies that he and Micythos have very similar appearances while the former is in this state.


 * Power Augmentation: The Bankai Stage 2 grants an enormous level of power that causes Seireitou to transcend the precipice that he normally presided by in the core Bankai state, to the point that it is considered "worlds beyond" the Bankai. However, because of the tense relationship between himself and his Zanpakutō, it has been noted that Seireitou's Bankai Stage 2 is not as efficient in its duration nor its energy expenditure when compared to that of Raian and his Zanpakutō, Kanāji Fūshin, whom share a partnership based on compassion and camaraderie.
 * Transcendent Spiritual Power: Seireitou's reiatsu has become dramatically stronger and more intense than it was before, so much so that Seireitou could momentarily contend with an unarmed Kurama Kawahiru on equal terms. Along with that of Raian, Seireitou's power at this stage has been considered to have moved beyond the "level of spirits" and has ascended to the "realm of gods", although this is merely speculation on the part of various opponents of notable strength. The intensity of his reiatsu has become like that of Genryūsai Shigekuni Yamamoto in the latter's Bankai, as the reiatsu is so formidable that its pressure actually takes on the shape of raging white flames, to the point that it can burn away the existence of any normal combatants simply by being in close vicinity to Seireitou whilst he is in his Stage 2. By a mere glance, Seireitou's aura can take the form of multiple solar flares that erupt outwards and utterly decimate the surrounding areas and subsequently all opponents that become struck by its might.


 * "Danzai, Shinwanryeok Hanullim" (断罪神の真実の究極の現実, "Condemnation, Shinwaryeok Hanullim"): Not Yet Revealed


 * "Genkai, Shinwanryeok Hanullim" (玄海神の真実の究極の現実, "The End, Shinwanryeok Hanullim"): Not Yet Revealed

Manifestation of Chaos
Several years after his defection from Soul Society, Seireitou was infected by a powerful Hollowfication virus prototype by Tadoku Getsueikirite and. The result was a Hollow named Grey. However, through personal training, Seireitou managed to control this power. Originally, to call upon this power, he formed a dense construct of reiatsu above his forehead and pulled it down, forming a mask crafted of crystal which was assumed to be the inner Hollow's spiritual energy in a crystallized state. The mask itself takes on a fox-like appearance, with its long ears drooping downwards. In addition, there were four thick black stripes that appeared to emerge outwards from the widened eye-holes of his mask and either disappeared into both sides of the lower jaw or traveled past the very top of the mask itself. It was following those events that in order to protect Shiori Miyamoto from Myōken that ended with the nature of the Hollow known as Grey which lurked within his soul to emerge and actually become influenced by Myōken's immense Shinkūmyō power, causing yet another transformation within the silver-haired man to occur. It had been believed that in addition to Hollowfication, Seireitou had now attained the energies of the evolutionary stage of Blanks, which suggested merging between the two as the use of both individual powers was continuously increased due to the enhanced threat levels that were necessary to deal with.

These two conflicting influences began to rouse the chaos that had been magnified by Seireitou's Zanpakutō, which led to the birth of a new entity within him that would serve as an extension of his very soul; known by the name of Sanagi, whom would serve as the manifestation of the very force of chaos that resides in an extraordinary concentration within all Sōzōshin. Because Sanagi is a part of Seireitou's own soul by serving as a unique form of his inner chaos (as many others who managed to manifest the chaos force had never actually caused an entirely new entity to arise) and in doing so, both he and Hanullim serve as the source of Seireitou's power. Originally, Seireitou could not maintain Sanagi's power, but after beginning the process of awakening his inner Sōzōshin blood, he was able to enact full dominance over Sanagi. This is shown by his eyes changing into a more complex form, signifying his power being balanced with Sanagi's own power. They would take on a ripple-like pattern which would spread over the eyeballs, with light purple irides and sclerae.


 * Power Augmentation: While tapping into Sanagi, Seireitou's spiritual and physical capabilities are vastly increased beyond their former selves. In his final fight against Datara Kawahiru, the nature behind this power had seemingly undergone some strange shift which subsequently prompted his capabilities in the form to also follow suit. Accessing these powers would be identified by the change of Seireitou's eyes as well as the nature alignment of his spiritual power. While in this state of being, he has demonstrated even more frightening tactics which he doesn't normally use in battle.


 * Vast Spiritual Power: Seireitou's power in this form is greatly enhanced; his aura shifts over to Sanagi and changes color from white to a smooth lavender. According to Shiori, the continued release of it would cause tremendous harm to the Soul Society. If he should continue to clash with Kamui while in this state, and Kamui in his Bakkōtō-enhanced state, it would spell the end of the Soul Society. It's sheer strength was great enough to horrify Raian, Mashū, and Makōtō who sensed his spiritual pressure far away from the bottom of Sōkyoku Hill. An interesting feat about his spiritual energy at this stage is the fact of it being pure distortional energy, erasing anything that contacts with it; ideally making it an atmosphere of black holes. He was able to use his reiatsu as a shield and expand it out as an explosion for a destruction that affected the surrounding area. It wasn't until he accepted the composite form of his inner rosary and Shinwaryeok Hanullim that he had truly unlocked the hidden power he held. When combined with his Bankai's immense capabilities, even the second transformation of Datara Kawahiru was unable to comprehend this power, as he states that Seireitou is "standing in a dimension far higher than himself."
 * Immense Speed: While in this form, Seireitou becomes dangerously fast and evasive, able to dodge all of Raian's bala attacks with little effort and keep up with Kamui while he is using Shikai and wearing his Hollow mask. He seems to move like a bullet, rather than use a form of flash step. His already high levels of speed have increased to such amounts that in conjuntion with his own pure distortional spiritual energy, he can manipulate interactions. While using his Shinkūmyō powers, Seireitou's speed technique often shifts from Shunpō to Unarikyō (金切り声を叫び, Screech Cry), which is the Shinkūmyo equivalent and produces a "scratch-like" sound.
 * Enhanced Strength: This synergized form was able to push back Kaito Kawahiru with little effort, and put all of the Captains on the defensive with just physical power. He is able to easily strike through a target's flesh with a single nonchalant sweep of his bare hands. He can slash through structures with ease, even those comprised of sekki-seki. He effortlessly outmatched Datara's maximum-powered Cero with a single hand.
 * Telekinesis: Quickly after transforming, Seireitou is able to call Hanullim back to his hands with just the wave of his hand. He is also shown to be able to use a form of telekinesis on his opponent. He even showed usage of minor gravitational control; being able to repel and attract substances, reiatsu or even living beings. Through the synergization of his Shinkūmyō and Hollow powers, Seireitou gained a minor form of mind reading.
 * Enhanced Shikon Hisakiten: When Seireitou summoned his Shikon Hisakiten technique, not only did it's speed increase, along with it's overall devastating after-effects and immense power, but also drastically changed shape and appearance. It took on the appearance of a compressed orb of circling lavender reiatsu, with several golden reiatsu whips encircling around the compressed orb, having an almost spherical tornado-like appearance. When utilized at full-power, it gives off the appearance of a kitsune upon being fired from the blade.


 * Cero Lamparos (ゼロライト (白中空フラッシュ), sero ramuparosu; Spanish for "Light Zero", Japanese for "White Hollow Flash") or more grammatically correct Cero Lampara, is a full-powered white Cero with a dark red outline to it, which Seireitou states to be the extreme opposite to Ulquiorra's black Cero Oscuras. When using this technique, Seireitou concentrates his vast spiritual energy with only his index finger into an condensed stark-white Cero with great might. When fired, it shines an immense white light that can burn the surrounding area it comes into contact with, and even leave those who stare at it temporarily blind. Seireitou refered to it as "my Cero." The Cero Lamparos's range is vast, and is immensely powerful enough to completely shatter Ryan's Zanpakutō, critically injuring him in the process, and strong enough to destroy the entire Senzaikyū tower in Seireitei. Despite the Cero being a Hollow-exclusive technique, the very fact that his Shinkūmyō powers have offered this technique may indicate that his Hollow powers and Shinkūmyō may be reaching their final evolution; seemingly overlapping eachother.

Transformation
Chrysalis Form: The sorrow felt by losing Shiori had finally reached a breaking point, as Seireitou's powers began to shift into a new state altogether. Seireitou's Bankai had began to enter a new unified state, alongside that of Sanagi. His body's natural black and white wisps of reiatsu began to surround him in what appeared to be a swirling tornado of screaming souls. A dense lavender reiatsu overcame Seireitou's body, as it crystalized and hardened around his body. In this new form, he slightly resembles his Sōzōshin form in a way, albeit his face is replaced with a lavender canvas made entirely of sapphire, as his entire body is now encased in. He also has retractable crystal claws on his fingertips and toes, small furry black tufts, and long fox ears that appear to be solid crystal and stand upwards, similar to that of horns. Behind him, it is shown that he possesses a long crystal tail, almost exact in appearance to a fox's, but much longer in comparison. His eyes are no longer visible, but replaced by a pair of glowing crimson lenses that serve as eyes. Seireitou is also shown capable of opening his mouth, despite his entire face encased by the sapphire. Sanagi, in the aftermath of the first incident, called this the "chrysalis form", implying that there is more to this form.
 * Undefinable Spiritual Power: Seireitou's spiritual power becomes so great, it cannot be sensed by Seijin master-level opponents. It is also great enough to instill the thought that they aren't attacking anything. Despite this, the effect of Seireitou's newfound reiatsu on the surrounding is still evident. Initially, it appears as enlonged wisps of lavender and black reiatsu, completely overwhelming everything and anything within the range of Seireitou's spiritual pressure.
 * Enhanced Cero Lamparos: His stark-white Cero has become exceedingly more powerful, capable of completely overwhelming Kamui's Esalare release and causing large scale destruction to large portions of the surroundings. It is fired from between the tips of his fox ear-like horns instead of his fingers as he normally utilized it. This Cero is white with a dark red outline as before and now quad-focused.
 * Enhanced Shikon Hisakiten: Seireitou's Shikon Hisakiten appears as completely surrounding the Shinwaryeok Hanullim. The extent of its power is currently unknown as it has never been utilized in this form. Renge refers to this attack as a "Birōdō Getsuga" (ラベンダームーンファング, Lavender Moon Fang), referring to the attacks' lavender color. Seireitou has stated that the Lavender Getsuga was originally Sanagi's technique.


 * Heightened Strength: This strange and unusual power was able to push back Renge Yamato with little effort, and put all of the Seijin Council on the defensive with just physical power. A mere punch was strong enough to shatter the ribcage of a kidō-protected Renge. It appears that Tōkaru's Shikai wall also fell by an effortless attack on Seireitou's part. Seireitou's strength was great enough to effortlessly shatter Renge's strongest technique in Bankai: Niban Dankai.
 * Immense Durability: His new crystalized appearance is not for merely show, as it is capable of fighting against the Bankai of captain-level opponents without being scathed in the slightest. Even the might of Renge Yamato's second stage Bankai was unable to scratch this crystalized form. He willingly lets Tōkaru's Getsuga Tenshō collide with him, and remains unharmed.
 * Unrealistic Speed: This new form grants Seireitou speed well beyond that of others, namely even Echo Ichimaru, one who is defined by his law-defying speed. Kamui speculates that this form allows him to actually contract the space-time continuum between himself and his desired location. With this type of ability, Kamui explains that Seireitou's speed can continue to increase to a point where even Kamui himself will be unable to comprehend, let alone match.

Awakened Form: Unable to control this unusual new power, and absorbed by the fear of hurting those around him, Seireitou entered a comatose state. This was to ensure complete mental and spiritual alliance, as Seireitou faced trials by Sanagi in order to control his power. Once he entered the chrysalis stage, his body would start shedding the crystal around his body, as his appearance would change drastically. He now wears a gray shihakushō, along with a black hakama, held together by a firm rope belt. A black mantle with burnt edges is draped over his shoulders, that stays connected together by what appears to be a tomoe necklace. His hair has changed colors, transforming from its natural silver to lavender with a purple tint. It also becomes much longer than before, especially his side bangs. Probably the most strange change to Seireitou revolves around his newly grown kitsune ears and long kitsune tail, both being lavender in color. His eyes obtain color from their mysterious mystic white to a resolute dark lavender, but retain a strange mystic white outline to them when Seireitou releases his spiritual power. They give off an apathetic feel to them, with Raian noting that he could feel the "solitude" behind them. Subsequently, he stated that no matter how hard they fought, Raian could not tell what Seireitou's heart was conveying, despite the close connection between the two. It seems that his personality also changes as drastically as his appearance, as shown by his much more stern contrast in both facial expression and in verbal expression. However, following his final confrontation with Raian Getsueikirite, his personality seems quite different in this stage, depicted as being even more cruel than usual. It was shown that he had a tendency to play with his enemies in battle. The difference in persona implies that they are separate entities, though it is clear that they are the same person. Raian speculates that this personality is drawn from both Seireitou's own persona and Sanagi. Seireitou, while in this stage, wields a strange manifestation of Shinwaryeok Hanullim, named Kumiho Hanullim (구미호하늘님, Supreme Nine-Tailed Fox Being). As Kumiho Hanullim, the Zanpakutō takes on the most strangest form, losing the appearance to even be called a blade. It now consists of a metal blade without any form of handle or guard, the blade's shape reminiscent of a japanese longsword. In order to be held without Seireitou's hand being cut, Hanullim now has a white cloth that is wrapped around one of the ends, that serves as a hilt. The simplistic appearance of Hanullim in this form causes opponents to gravely underestimate Seireitou, as shown in his fight with Sao Jiang. At will, whilst in this form, Seireitou can generate nine lavender-colored sapphire tails from behind him, resembling fox tails. These can be used for offense, and even for defense, as they can be made to move at Seireitou's whim.
 * Instantaneous Cero Lamparos: Being the only power shown in this stage, due to Seireitou using this form just once so far in a battle with Akujin, he can fire an instant and destructive Cero Lamparos from his fingertip. It's color has changed from it's stark-white with a dark red outline, to a darkened lavender with a solid mystical white outline, not unlike the appearance of the edges of Seireitou's eyes in Bankai. It was quick enough to completely devastate the entire Rukongai, from the Seijin Temple to the Seireitei, which is an estimated nine miles in length, and strong enough to completely penetrate the Seireitei's sekki-seki walls, despite being shot from several miles away. It's very presence can scorch the clouds in the skies.
 * Unrecognizable Spiritual Power: Reaching a point where it can no longer be called spiritual power, Seireitou's reiatsu has further increased from his chrysalis form. Unique to Seireitou's awakened transformation alone, it appears that he can change the properties of his very spiritual energy. It usually circles around his surroundings as puffs or clouds of spiritual power, that usually shift from a calm lavender color to a mystical white. Renge comments that these clouds are manifestations of Seireitou's feelings and emotions that are being influenced by his monsterous spiritual power. Being the most unique of all spiritual powers thus far, Seireitou's powers work in the exact opposite to Raian Getsueikirite's power. Instead of being unable to sense it, one who feels Seireitou's power will sense it all around them, being unable to pinpoint Seireitou's existence. Kamui claimed that he could "somewhat" pinpoint it, further commenting that only one of Sōzōshin heritage or equally-powerful status could fully comprehend its might. When using this technique, Seireitou glows with a thin red hue of spiritual energy, and his sword strikes unleash massive waves of white spiritual power with every swing. Kamui noted how heavy his spiritual power is in this state, and even noticed how it was almost as solid as crystal.
 * Physical Augmentation: It was noted by Kamui that Seireitou's physical abilities were unlike that of his Bankai. His arm strength, leg strength, resistance, and speed had become significantly increased, to the point of making Kamui's Bakkōtō power look like nothing. By his own claim, Kamui stated that using his Bankai against this form would end in the same result. Seireitou had to cushion the impact of his blade by making it blunt with his "crystallized" spiritual power, albeit it still crushed right through Sannotō's Zanpakutō, and left a massive gash on the former's chest. Seireitou's strength has also reached frightening heights, even by Seijin-level standards, allowing him to take on the force of all but the most strongest attacks without needing to dodge or block. In fact, his strength allows him to shrug off the force of a point-blank attack from Kurama Kawahiru. With a simple flick of his finger in Renge's direction, he was able to push back the latter through three buildings, albeit being a considerably short distance between them. By flicking his thumb from inside his fist, he could form a miniature vacuum which would function like a bullet, shooting the target that Seireitou designates. In addition, his level of movement transcends all forms of speed enhancement, foregoing the need for flash step. Whenever he moves, he appears from one point to another point, leaving behind a small hue of white spiritual energy.

Relationships
Being a man whom values his bonds, Seireitou has formed several unique and interesting friendships, alliances, rivalries, and even enemies due to his actions and viewpoints. Interestingly enough, several female characters in the series have possibly developed romantic feelings for him despite his strange and eccentric persona, though most likely a result of his inwardly compassionate nature.

Seireitou is not known to be close with his immediate family. He is estranged from his "father" and his mother for obvious reasons. While he is known to have had a lover, Seireitou was married only once. His wife, Shiori, had been killed during the events of Datara's campaign of warfare. He is also known to be on rocky terms with his son, although the latter seems to have much respect and admiration for his father while the former cares deeply for his son; despite the both of them being incapable of portraying this father-son care for one another. He has also conceived an illegitimate daughter that was the result of a drunken exchange between himself and Rangiku Matsumoto.

During both the Hollow Wars and the Quincy Blood War, Seireitou was known as "Shiroyasha" for many frightening reasons, including his bloodthirsty battle-loving attitude and desire to cause vicious injuries upon his victims; although one of the most fearsome reasons was due to his "unique" method of intelligence gathering which involved the capture of several females among the enemy ranks to be raped and subsequently tortured for information. According to Seireitou, he has assumed to be the sole person responsible for the rape at least forty-seven female Arrancar and sixty-three female Quincy, four of which in regards to the latter were among the Stern Ritter; most prominent among these included Luciana Basterbine. Several offspring were later determined to be conceived from these unions, such as Bambietta Basterbine and Meninas McAllon, among many others; although it is unknown if Seireitou is aware of each and every one of these bastard children.

Anime Omake Segment: Sei-san no Kyōshitsu
Seireitou is in charge of the Sei-san no Kyōshitsu (の教室, literally "Sei-san's Classroom"), an omake segment that airs at the end of some chapters in the series. It is where he outlines various facts about characters in the series, as well as instructs the audience in subjects not fully covered in the actual chapters themselves, teaching it to a classroom full of the main characters dressed in school uniforms. Similar to Gin Ichimaru's Arrancar Encyclopedia, many sketches will usually start with a surprise guest(s) for that segment announcing the name of the sketch, at which point Seireitou will give a short course on a specific topic, such as the character in question's standard abilities. Once Seireitou has finished, the person that announced the name shows up to comment on the topic, usually resulting in a humorous retort by Seireitou. During these segments, he also answers fan mail. On occasion, Seireitou will be "out sick", in which one of the other three Yonkō will substitute for him, typically Raian Getsueikirite, which almost always leads to a humorous subsequent scene involving Seireitou realizes who's substituting for him.

Quotes

 * (To Raian Getsueikirite) "It isn't a sense of justice. Fighting powerful opponents and protecting those close to me is how I live my life. It is the path of which I have chosen to walk. If you measured good and evil deeds by current laws, I would be responsible for many crimes. That is why I only take on fights which pique my interest. It isn't justice whatsoever. If it means saving the life of a friend or advancing my own power... I'll do whatever it takes to win. I don't and will not play fair. I'm a dishonest cheat who hates losing."
 * (Regarding Shiori Miyamoto) "I've decided. I'm going to become her guardian. Become the strongest I can be and change things. So that they'll end... without Shiori-chan having to cry."
 * (To Hikaru "Shadow" Kurosaki) "Quit being stupid. Stand up. If you've got enough time to fantasize about your beautiful death... then why not live your life beautifully to the end?"
 * (To Genryūsai Shigekuni Yamamoto, during the Quincy war) "If you believe that I serve as a Captain of your Divisions so that I can protect the civilization that you and the rest of these murderers have so painstakingly worked toward creating, you're dead wrong. From the start of this, I've sought only to protect Shōyō-sensei... and also, Raian-san, Shiori-chan, Senka-chan, Hikaru-san, and even Echo. Do not forget that it is akin to blackmail that you got me to go along with your little "Gotei" group. You had best not forget your place when speaking with me, old man. I have no qualms about killing every last man, woman, and child that dares to swear loyalty to you. I will smash to bits this entire Seireitei if I have to."
 * (To ) "A warrior has only one job on the battlefield. And that... is to win. There is no such thing as a "good side" or a "bad side" during a conflict. When at war, both sides are in the wrong. You must shed the childish thoughts of respect and honor... and become a demon. That is the only way to survive on this battlefield."
 * "You should know better than to corner an animal like a fox... we have a tendency to show our teeth."
 * (To Datara Kawahiru) "Get up, you miserable fuck! It's time you learned why you're not in our league!"
 * "Sometimes, it's a pain being the strongest among those who fight. Those who have the greatest power amongst their group, have the innate responsibility to ensure their own and their fellow compatriots' well-being. When they have the ability to take action, it is their duty to take action. However, while it may be a tribulation, should one of the group members fall, the burden of that loss is weighed on the strongest one's shoulders, as the one who failed to protect those under him. In this way, nobody can be blamed but yourself. But you see, it is precisely this reason why I strive to be the strongest among those around me. So then... I have nobody to blame but myself if one of my friends die on the battlefield."
 * (To Datara, the final battle) "Interesting... Tell me, Datara. Why did you just distance yourself from me? Weren't you the one telling me that distance only matters in a battle between equals? Is this your way of telling me that you're scared of what's happening right in front of your eyes? Of something happening... that you can't understand?"
 * (When training Ahatake Kurosaki) "You are a fool, nincompoop. For I am not here on any official business other than the hopes that I will find either breasts I can fondle or an ass I can kick!"
 * (To Sao Jiang) "I'll give you a chance here. If you leave now, then I won't kill you, and I won't need to use my exceedingly valuable time to investigate the motives behind your actions, once again screwing up an evil mastermind's plot to take over the world or something cliché like that. Savvy?"
 * (To Saori Sumeragi) "Saori, it takes a lot to get me worked up... but this time my boiling point's as low as it's ever been. The "Silver Hairs" Seireitou, the man regarded as the "white demon" Shiroyasha... is about to go on a rampage!"
 * (To Minato Kuramoto, and later Miharu Kurosaki) "Try to picture the toughest, most intense, most terrifying training you can possibly imagine. So, did you imagine it? Now imagine that... was Heaven."
 * (After refusing the Royal Guard's request) "Sorry, I'll have to pass on that. My doctor says that I have a malformed public-duty gland and a natural deficiency in moral fiber, and because of that, I am therefore excused from having to save the Soul Society."
 * (To Klaus Nietzsche) "Listen... What you do in the spiritual world or even here in the world of the living matters very little to me. Do whatever you want there. But anywhere within the reach of my sword... is my country! Anyone who comes in here and messes with my people... whether they happen to be enforcers of justice, bringers of darkness, or even the Spirit King himself... I will cut them all down!"
 * (To Mūrata Amakuni) "Even if we're just flickering candles... by gathering together, we can illuminate the darkness. Even if the flame is put out, if it's left for just a minute, it can start another fire. No matter how many times you try to put me out, you're just wasting your time. I have coals set aside. I won't disappear, those coals are with me always. As long as I have them, no matter how many times I'm put out, I'll keep flaring back up. Someone like you... can't put out our flame!"
 * (To Táowù) "Well, it's not like I was trying to hide it or anything. Hanullim, I guess, just wasn't in the mood. You see, in Shikai, Hanullim can manipulate existing interactions. But there's always so many interactions going on at any one time, and he's too much of a lazy-ass to work hard enough to manipulate them all... It's annoying to work with him sometimes. He is my sword though, so I learn to put up with him."
 * "Since you're so willing to use such a killing move... then I shall use my own killing move as well."
 * (To Saori) "No matter where you are, no matter how scared you are, the sun is there. However, that sun... is often covered by clouds. But if you continue to watch the sky, it will eventually make its way through the clouds. That's why... we must never lose sight of that. We must never stop staring at the sky. Stand up straight, watch the heavens, and continue to live your life. Tell everybody you see who looks depressed... to watch the skies. In this filthy, dark, lead-colored sky... I'm going to drag down a ridiculously-bright huge-ass sun."
 * (Regarding his and Kamui's Zanpakutō) "If Shinbyeong is a Zanpakutō that changes and decides fate, then Hanullim is a Zanpakutō that challenges fate."
 * (To Odo Marquard) "You think that you can strike me down because you stole Shinwaryeok Hanullim? How naive. Why do you think that I was feared as the Shiroyasha for so many years? It is because, in all this time, the tenacity that I have toward fighting... has never once been rivaled!"
 * (To Hōsen Kuramoto, about Shōyō) "Well shit... Perhaps you're stronger than I thought. But that's no excuse. Even as things stand, I can feel the same chills up my spine from back in the day. It's as if he's scolding me... even in death. "To have trouble with such an opponent, I don't remember raising such a coward!" is what he'd say."
 * (To Tome Kūgun) "You fight only with instinct. Perhaps, in some ways, that is an admirable trait in a Hakuda fighter. But not a Master. Masters are those who abandon reason, instinct, logic... and even truth. For those are nothing but limits that restrict the Master. The way that you fight is akin to that of a mutt blindly following the word of its master. That's what you are, a puppy-dog. Without even considering the circumstances, you charge in headfirst, letting your instinct be the master calling the shots. But you see, demons think a bit differently. Not bound by instinct. We're fully aware of the damage we cause... and enjoy every moment of it. The mistake you made, puppy-dog... was stepping into the ring with a demon. You're out of your league here, hound."
 * (Speaking to several opponents) "As I've already told you, the only one who could repel my attacks successfully was Raian-san. Too bad he isn't here at the moment. Though... in a way, that's a good thing for all of you. Because if it's just me... the maps won't need to be so drastically redrawn this time."
 * (To Gekkō Kirameki) "Killing has never been something I've been capable of doing on a whim. In this sole regard, I am different from Raian-san. However, my pride as a martial artist prevents me from operating under such a principle when confronted by an opponent who is prepared to put their soul at risk. With such spirit opposing me, I will never regret... wearing the title of murderer."
 * (To the Mimakotei troops, about his Dojang's female residents) "Good grief. We've got three world breakers with us. I'll give you some advice. Call for reinforcements. You might be the noble houses' personal guards, but you're probably too soft from all the peace and quiet to take us on. Meanwhile, we're still at war, fighting for our lives everyday against those psychos!"

Behind the Scenes

 * While Seireitou is his first name and Kawahiru is his last name, his full name is Seireitou Shōin Kawahiru no Jirō. Kawahiru no Jirō means "second eldest son of the Kawahiru family" whilst Shōin means "shape/form of an ideal", which was the name given to him in birth by his mentor and grandfather, Shōyō. The name Shōin was derived from Yoshida Shōin, whom is one of the author's most respected role model. Seireitou's first name means "guardian of the spirit".
 * According to the author, Seireitou would be voiced in Japanese by Sugita Tomokazu, the seiyū for Gintoki Sakata from Gin Tama. He would be voiced in English dub by Dustin Hoffman, the voice actor for Master Shifu from the animated movie Kung Fu Panda.
 * Seireitou's theme song, as chosen by his author, is "Hero" by Doa.
 * Seireitou's official OST is Ah Kimochi Warii, Futsukayoi da na Korya by Kamagata Eiichi.
 * Despite being one of the strongest, Seireitou has a deep fear of cats. This carries over to cat-like Zanpakutō spirits as well.
 * Prototypes of this character's article are Seireitou Kuchiki and Seireitou Kawahiru (Bleach Nagareboshi).
 * According to the Bleach Databook:
 * Seireitou's hobbies include meditation and martial art training.
 * Seireitou's wishes to test his strength out against Hikaru and Echo.
 * His favorite food is imagawayaki with grape filling, along with a side of miso soup. His favorite drink is hot oolong tea.
 * Seireitou's favorite phrase is "nankurunaisa" (なんくるないさ, Everything will turn out alright in the end).
 * The image depicting Seireitou in the Jinki Fragments arc was drawn by Zanpakutō-Leader on DeviantArt, formerly known as Cayossj2.