Kowasure Kawahiru

 (子忘れ川昼, Forgotten Child of the Surrounding Daytime) is the youngest son of Yeshua Kawahiru and Tsuyuri Kawahiru. Although he's younger then both Kamui and Seireitou, he's older then Zashiki. Because his father feared that he too would become a renegade like his brothers, he was restricted from leaving the palace at all times. He eventually ran away, but his position to his father and the rest of Seiretei is still unknown, as Kowasure didn't want to get involved with any political issues. His existence is known by few, and is unknown if even his brothers know about him.

Appearance
Kowasure has the appearance of a well-build and fit young man. Despite being smaller then his brothers, he is still quite tall in comparison to others. Like his parents, he has long silver hair that he lets hang loose and silver white, cat-like eyes. Kowasure commonly wears a light-blue kimono with white trimming; it features a white hakama, with blue lining, along with a blue robe belt, making him similar dressed to his brother Kamui. He does not carry his blade with him, as he can "smmon" it with the blade's special properties.

Personality
Kowasure has mostly a very calm and laid-back personality, letting his shoulders hang down and speaking with a soft, uncaring voice. However, this is merely a disguise, as he's shown to be eager at all times, being able to react to any surprise in a moment's notice. He has been called lazy by many, which he defines as "not liking to do much". He defines his brother Madara as cruel and his other brother Seireitou as immature, while he defines himself as "balanced". His personality, however, does lean more to that of his brother Kamui's, as he is also seen as cool and calm. In his heart, he's pacifist, and will mostly try to avoid killing his opponent in battle, unless given a valid reason to.

However, Kowasure has shown to have great determination to achieve his goals, which consist of "being free" and surpassing his brothers, and can be very impatient when he has the chance to do so. Due this, his intelligence can sometimes be overshadowed by his eagerness, which lead to him making fatal mistakes in battle. In any other battle, however, he can mostly keep his cool far beyond where a normal person would have lost it, and is able to think up brilliant plans in the midst of battle. His status as a member of the Royal Family does not seem to interest him at all, and he will mostly trie to hide it, except from his brothers and other people he wants to defeat.

Abilities
Unseen Spiritual Power: Perhaps the reason his father wanted to train him so badly, Kowasure's spiritual power is unique in every aspect. He refers to it as "Negative Reiatsu" (負霊圧, Make Reiatsu), and it is essentially the opposite of normal reiatsu. While he describes normal reiatsu as violent and untamed, his is calm and balanced. His reiatsu is so great that it heals the nature around him, as well as himself, which allows him to recover from major injuries usually within a day, and minor injuries within a few seconds. He can even use his reiatsu to form wings, which he can use to fly at high speeds. While most opponents see this kind of reiatsu as unusable in battle, even the feeling of Kowasure's reiatsu can cause powerful illusions which do not affect the five sense like others, but the mind directly. His spiritual power is immense, believing to be almost on par with his brother's, and is silver in color.

Master Swordsmanship Specialist: Due to the years of training under his father, Kowasure is very proficient in Zanjutsu. He's ambidextrous, which he uses to his advantage in fights, often switching his blade from hand to hand, catching his opponents by surprise. His mastery has shown to be so great to the point of easily defeating, without killing, hundreds of hollows in a single battle without sustaining so much as a scratch to himself. He's confident in the point that he can fight on par with his brother Seireitou, but this remains yet to be proven.

Devastating Speed: Kowasure's main trait is his speed. He is believed to be even faster then his brother Kamui, but in addition, lacks in strength. He has the ability to move at blinding speed in short bursts, Kowasure can move faster than the eye can see, both on land and through the air. When he does this, he leaves behind a fast-moving blur and in some cases, after-images. He can also instantaneously close long distances without being detected by others and was able to dodge a cero who was fired with the hand placed on his back without receiving any damage at all. Even during training, his speed impressed his father, and when his sister asked his father if he was using Shunpo or Wúpiào, Kowasure explained that he wasn't fond of neither of them, and that his speed was simply achieved by usage of his strange reiatsu. The exact means of this are still unknown.

Kidō Master: Although being quite adept at using Kidō, he still states that he is nowhere near Kamui's or even Seireitou's level. He was able to use the clan's signature Kidō, "Hadō 88: Hiryugekizokushintenraiho" (飛竜撃賊震天雷砲, Flying Dragon-Striking Heaven-Shaking Thunder Cannon), without reciting the incantation and still having it enough power to go through several buildings without slowing down or losing in power, as well as using a level 91 Bakudō spell to counter a level 96 Hadō spell. He also made up several Kidō on his own, which can be classified as high-level Kidō.
 * Jinnō Shōtōki (神皇正統記, Chronicles of the Authentic Lineages of the Divine Emperors) is a Kidō invented by Kowasure. This allows him to manipulate his shadow in the form of tentacles which slitter on the ground to posses living creatures in his surroundings. When his shadow has reached his target, he's in total control of him. The more "tentacles" he creates or the farther he goes, the less is the effect. Persons with an exceptionally strong will or massive amounts of reiatsu can negate this technique, but still at the cost of much energy.

Zanpakutō
Seiryū (清流; Clear Stream) is the name of Kowasure Kawahiru's Zanpakutō. Named after the Azure Dragon of the East, it takes the appearance of a nodachi when sealed, and emits a powerful holy aura from it's blade. The guard is red, while the hilt is blue with a rectangular, golden pattern. An interesting fact is that Kowasure does not carry his blade around. When he needs it, he can pull it seemingly out of thin air. When asked how he does that, he simply replies "balance", so the exact way remains a mystery. Another strange feature is that, due Seiryū's and his reiatsu contradicting to each other, Kowasure sometimes has problems wielding his blade in it's sealed state. However, this problem is overcome when he enters Shikai. The blade will also start to pulse when Hollows, Arcannars, Vizards or any other person with a "demonic" presence inside him is near.


 * Shikai: Seiryū's shikai is released by the command "Harmonize" (ハモる, hamoru); When releasing his Zanpakutō, he holds it in front of his face with both hands, the blade pointing up, and declares the release command. After this, Kowasure's reiatsu will sprout out of the ground, and will begin to spiral around Kowasure. This rapid "whirlpool" of reiatsu will then shoot straight up into the sky from ground zero, evaporating clouds and anything else that are unfortunate enough to be in its path. When the light dims, Seiryū's shikai form is revealed. The blade itself becomes a japanese longblade, with the guard now round and in a yin/yan design, and the hilt becoming a dark blue. The blade itself becomes pure white, but can lean more to silver when Kowasure adds his reiatsu to it.
 * Shikai Special Ability: Kowasure has described Seiryū's power as the power to "bring balance". He explains that Seiryū's shikai has two main abilities. The first ability is to intercept and negate any incoming attack, regardless of it's from or size. When doing this, Kowasure holds his sword in a linear position, and calls out Seiryū's name. The guard will then spin, and any incoming attack will vanish. This is achieved by, as Kowasure says it "bringing balance". Seiryū will initially counter any attack with it's exact opposite, resulting in the attack being neutralized. While initially being seen as the ultimate defense, it was later discovered that there is a short time limit between each use, though only for roughly five seconds. The second ability has yet to be discovered, but Kowasure has revealed that it works in a similar way to his brother Seireitou's Hanullim. Seiryū also comes with a general increase in strength and speed, but to what level is unknown.
 * Suibihitsuki (水日火月, Water Sun, Fire Moon); Kowasue's will eyes glow intensely, appearing heterochromic; the left eye blue, and the right eye red. He will then point his blade in the air, what will also be glow intensely. He will then release two dragons made from his reiatsu from his sword, one blue and one red, which will intertwine and form a powerful tornado that destroys, or kills just about everything and anything in it's path. Yeshua described this as the attack symbolizing all the opposite forces of nature, which can destroy anything due the fact it is everything self and opposite. It took the full power of Tsuyuri's Aigyou Reidou attack just to stand a chance against this move on low power during training.


 * Bankai: Not Yet Revealed

Trivia

 * Kowasure tends to call his brothers "Soonnim" (달님, The Moon), for Kamui, and "Haennim" (햇님, The Sun), for Seireitou. He does so because he believes that reflects both their powers and personalities, while he refers to himself as "Byeol" (별, The Stars).