Shiroi Senkō

Shiroi senkō(White Flash) is the current leader of the Hollow Hunters. He is often called Kyōfū(Gale Force).

Appearance
Shiroi wears suits and shirts when in public and wears less restricting clothes when in combat.

Personality
Shiroi is known for being laid-back and non-violent when in the Human World but explodes with anger when hunting hollows or arrancers. He only gets mad on rare occasions.

History
Shiroi's child hood is unknown except for the fact that he was prominent in alchemy. He always thought that spirits existed in another dimensional plane and came up with a theory to get there. He believed that he would need to die or go beyond death to be able to go back and forth through the realm of the dead and living. Shiroi was followed since the age of 9 by shinigami to watch his activity and stop him from finding out about Soul Society. Their plans were stopped when Shiroi, aged 11, began seeing spirits and developed a captain-level Reiryoku. Shiroi's power was on par with Yamamoto's; the Captain-Commander of Soul Society. Shiroi,age 17, got home to find his mother and father dead from unknown causes. Shiroi couldn't explain the hole the holes on their chests and went around asking doctors about the incident until Kisuke Urahara showed up at his house. Kisuke explained what had happened and how Shiroi's theories about the world of the dead were true but the two were attacked by Onmitsukidō shinigami. Kisuke and Shiroi defeated the Onmitsukidō and Kisuke made a deal, to go through the hollowfication process with Shiroi and in return steal a shinigami's zanpakuto.

Shiroi went through hollowfication and battled in his inner world for 7 hours. After beating his inner hollow he obtained his hollow mask and was officially a visored. He used a weak version of the Hōgyoku to start the hollowfication and after he had finished his reiryoku level were tremendous. Shiroi went to Hueco Mundo for the first time to train in combat and control his inner hollow. Shiroi took down more than 18 adjuchas level menos, this worried Kisuke Urahara so he tried to contact Soul Society. The Seireitei ignored his request to allow entry for Shiroi and said that humans in the Seireitei was strictly prohibited.

Shiroi went to the mountains to train for 3 years in ki circulation techniques and developed a way to synchronize his hollow powers with his naturally high reiryoku and developed a way to reverse his whole energy circulation to swap his subconscious with his conscious, in this state he moved on instinct and perfectly combined hollow energy with reiryoku as he wasn't limited by his own thought processes, this technique is called Gyakuten heisoku(逆転閉塞, Japanese for Reversed Obliteration).

After Shiroi's training he went lived in Karakura city peacefully until he was called by Kisuke to try and save one of Aizen's test subjects. Shiroi went to Hueco Mundo and tried to save Hinata Mai but was stopped by the Espada. Shiroi was able to defeat 3 of the Espada and dodged the others. He used shunpo to find Hinata's room and broke her out by flash stepping past the espada. They got out of Hueco Mundo and became master and apprentice with Kin Sora, Hinata's spiritually aware friend, in an attempt to control the hollow inside Hinata.

Shiroi found a wounded Kishi Takeshi being protected by shinigami when coming back from Hueco Mundo. He took Kishi back with him while the shinigami were occupied and tried to teach him how to defend himself in a situation like that again. During training Hinata went on a rampage after releasing her hollow powers and killed Kin, Shiroi was forced to blow a hole through hollow Hinata's chest, killing her in the process.

Shiroi tried to persuade Kisuke to sneak him into the Seireitei to get the 2 girls but Kisuke said that it would be better for them to train their instead of in the human world. Shiroi was sought out by Shiraga Kame 15 months after Aizen's invasion. He was going through the hollowfication process and needed help to survive. Shiroi helped Shiraga by teaching him one of the most dangerous techniques in the world. It was a form of acupuncture that blocked all of the reiryoku channels and trapped the hollow power in one spot. This made it easier for Shiraga to fight his inner hollow and overcome it. To re-open the channels Shiraga's soul was forced out of his body so the pain from the acupunture would be less.

2 months later Shiroi is caught up in the Vandenreich invasion as a secretive driving force that aids the Gotei 13 in defeating the Vandenreich. After another 2 years Kin Sora and Hinata Mai go to Shiroi to ask for refuge as they escaped Seireitei upon joining Shiho Academy. They then formed the Hollow Hunters to limit the levels of hollows due to an increased number of hollows in Karakura town.

Abilities
Shiroi was very experienced in fighting at a young age, he protected his friends from bullying when they were harrassed and became notorious at his old schools.

Natural Abilities

 * Vast spiritual power:Shiroi has spiritual powerHis reiryoku is coloured a black with a navy blue outline
 * Immense brain power:Even when he was a child, Shiroi was coming up with ideas as to what happened after death.At age 7 he composed a theory that suggested Hell is another dimension and so is Heaven meaning that only a few beings could move through all 6 dimensions; Length,Width,Height,Spacetime,Heaven and Hell.This idea was neglected but Shiroi still went on to try to find a way to the 'Heavens' and almost killed himself to get there.

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