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Named after himself, Overhaul's quirk is terrifyingly versatile, making him a devastating threat. Deconstruction & Reconstruction: He can instantly disintegrate anything he touches and reassemble it at will. He uses this to instantly kill targets, manipulate the battlefield (like shifting earth/stone), and heal or repair injuries. Fusion: By deconstructing himself and a subordinate simultaneously, he can fuse with them to absorb their power and abilities, significantly boosting his physical strength and unlocking additional appendages.
Kai is a pale young man of a narrow build with short, shaggy, auburn hair parted to the right. His eyes are thin, irises small and gold, with relatively long lower eyelashes and small eyebrows. He also possesses a small scar on the left side of his forehead that he acquired after his fight with the League of Villains. He has three piercings in his left ear. He usually has his mouth covered by a plague doctor mask. Overhaul wears a black dress shirt with matching dress pants, a pale gray tie around his neck, a belt with a long, thin buckle around his waist, and three beaded lobe piercings in his left ear. Over this, he wears a dark olive-green bomber jacket with a thick purple fur collar and white lace-up sneakers with tan soles and ankle socks which can't usually be seen. Kai's most distinguishing features are the white surgical gloves he wears on his hands and the magenta plague mask he wears over his mouth, which is tipped and embroidered with gold. Kai is very germophobic and hates anything he perceives as unsanitary, frequently remarking about the unclean appearances of certain people and locations. He refuses to be touched by others or even breathe in the same air as theirs, which is one of the reasons he wears an air-filtering plague doctor mask and forces his subordinates to do the same while around him. If blood, dirt, or some other unclean substance comes in contact with Kai's person, he will start developing hives and lose his usual composure, becoming increasingly unhinged as a result. In drastic circumstances, though, Kai will let go of his aversions to crush an enemy standing in his way, either due to pragmatism or out of sheer hatred. Age; 27 Sex; Male Height; 179cm[1] (5'10") Hair Color; Dark brown Eye Color; Gold Quirk; Overhaul Birthday; March 20th Alias; Overhaul True name; Kai Chisaki
Extra details; Kai doesn't value humans, viewing people as pawns for their utilitarian value and being willing to experiment on them to accomplish his objectives. He carries this sentiment even towards the other members of the organization to which he has dedicated himself since childhood, treating them as expendable sacrifices for his well-being and having no qualms about killing them off for the most minor mistakes. The masks worn by Overhaul's closest subordinates also serve as a reminder of this mindset: he doesn't view them as worthy of sharing the same air as him.
Overhaul takes over the Shie Hassaikai Yakuza group and forces them into the villain business. He discovers Eri, a young girl whose quirk allows her to rewind time on a living body. By repeatedly breaking Eri down and reassembling her, he harvests her cells to create a drug capable of permanently erasing a person's quirk.
As a young yakuza, Kai was extraordinarily ruthless and would kill anyone who didn't show the Shie Hassaikai the proper respect, constantly getting into fights with rival gangs. Kai's boss, who was growing aware of the violent, immoral path his underling was following to uphold the name of the Shie Hassaikai, attempted to sway him towards a more honorable course, but to no avail.
Among the very few people Kai has ever shown genuine care and concern for is the former boss of the Shie Hassaikai, who rescued him from the streets at a very young age and raised him as a yakuza. Kai, to this day, still feels deeply indebted to his boss for taking him in, being adamant in returning said debt by returning the yakuza to their glory days somehow. Ironically, despite his sociopathic mindset and inhumane treatment of others, this makes his ideals about family much more personal than any other members of the organization. Aside from this, he has also shown to value Hari Kurono, his childhood friend and right-hand man, having healed his injuries and being the only one of his subordinates he does not treat as disposable.
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Release Date 2026.06.05 / Last Updated 2026.06.05