Kai Chisaki

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There are so many capable men … and all they can think to do is rob a appliance store ? Kinda wyrd … you ‘d think a group this big might just, y’know … have bigger goals than that … You ‘re all ghastly. And you need a cure .Kai Chisaki to Team Reservoir Dogs in “Unleashed”

This article is about the character. For this character’s Quirk, see Overhaul.

Kai Chisaki

Biographical Information

Kanji Name

治 (ち) 崎 (さき) 廻 (かい)

Reading: Kai Chisaki

Rōmaji Name

Chisaki Kai


Ōbāhōru ? )

Overhaul (オーバーホール,

Personal Description


[ 2 ]

March 20th


27 (First appearance)

28[2] (Current)


Male.png Male


[ 1 ] ( 5’10½ ” )


Hair Color

Dark brown

Eye Color









Leader of Shie Hassaikai


Shie Hassaikai

First Appearance

Manga Debut

chapter 115

Anime Debut

Episode 62


Japanese Voice

Kenjiro Tsuda

English Voice

Kellen Goff

Caitlin Glass (child)
Terri Doty (child; My Hero One’s Justice 2)

Image Gallery Kai Chisaki Images Kai Chisaki ( 治 ( ち ) 崎 ( さき ) 廻 ( かい ), Chisaki Kai ? ), [ 3 ] besides known as Overhaul ( オーバーホール, Ōbāhōru ? ), was the Yakuza drawing card of the Shie Hassaikai. [ 4 ] He served as the main antagonist of the Shie Hassaikai Arc .


Kai is a pale young serviceman of narrow human body with brusque, shagged auburn hair, parted to the right. His eyes are thin, their irises small and aureate, with preferably retentive lower eyelashes and small eyebrows. He besides possesses a little scar on the leave slope of his frontal bone that he acquired as a result of his contend with the League of Villains. He has three piercings in his impart ear. He normally has his talk covered by a plague sophisticate masquerade. Following his battle with Izuku, however, his mask is removed and his mouth is consequently uncovered. Following his kill, he besides lost both of his arms to Mr. Compress and Tomura Shigaraki during his bodyguard to a villain hospital. Kai wears a black snip shirt with matching apparel pants, a pale grey bind around his neck and a belt out with a retentive, thin warp around his shank, with three beaded lobe piercings in his left ear. Over this, he wears a darkness olive green bomber jacket with a slurred purple fur collar and white lace-up sneakers with tan soles and no socks. The white surgical gloves he wears on his hands and the magenta harass dissemble he wears over his mouth, which is tipped and embroidered with amber, are his most identify features. During his imprisonment in Tartarus, Kai ‘s hair has become a bit longer and he has developed some chaff. He besides wears a standard inmate outfit with the sleeves placid attached and his arm stumps are bandaged underneath. After escaping from Tartarus, Lady Nagant changes Kai ‘s convict outfit with a long, light dress shirt and colored pants .


Overhaul manga portrait Kai in the manga Kai Chisaki as a child (Anime) Kai as a child .Kai Chisaki before becoming a villain Kai before becoming a villain .Kai Chisaki is horrified Kai unmasked .Kai Chisaki One's Justice 2 Design Kai in My Hero One’s Justice 2 .


After fusing with Shin Nemoto, Kai gets an extra two arms deformed with transfix claws and black parts of Shin ‘s cape. His hair gets spikier, and his mask rips apart, seeming to be fused onto his grimace, which is besides covered in black fabric. Shin is presumably conscious in the fuse shape as his mouth is used through Overhaul ‘s right hand and his quirk is in use. [ 5 ] After fusing with Rikiya Katsukame, Kai ‘s lower soundbox is fused into a monstrous stone structure, protruding multiple appendages each equipped with claw hands. Kai ‘s amphetamine body is the same but lies within the mouth of the structure, and his amphetamine yack has Rikiya ‘s disguise. [ 6 ] Overhaul fused with Shin manga Fused with Shin Nemoto in the manga .Overhaul fused with Shin Nemoto Fused with Shin Nemoto in the zanzibar copal Overhaul's Final Form Fused with Rikiya Katsukame in the manga .Overhaul Final Form Fused with Rikiya Katsukame in the zanzibar copal .Kai Chisaki and Shin Nemoto One's Justice 2 Design Overhaul ‘s Nemoto coalition in My Hero One’s Justice 2 .


Kai is a mysophobic, antisocial sociopath who is obsessed with returning the world to the way it was before the Quirk phenomenon. Due to a combination of an old theory claiming Quirks derived from rats and his own mysophobia, Kai believes that Quirks are actually a blight on humanity, having infected people with “ syndromes ” of heroism and villainy. He looks down upon those that use their abilities for either function, referring to acts of heroic forfeit or petty crime as “ sicknesses ”. [ 7 ] [ 8 ] Kai is extremely determined to his ambition of eradicating Quirks, not merely due to his own personal phobia, but besides because such a matter would allow the Yakuza to reclaim the world power they once held over company. Kai has no moral compass and an enormous ego, viewing himself as the only person in the world that ‘s enlightened to the “ dependable nature ” of Quirks and deserve of the touch as ruler of the underworld after All For One ‘s fall. In malice of this, Overhaul ‘s values are noted to be paradoxical, particularly his overreliance on his own oddity that he happened to name himself after. [ 9 ] As the leader of the Shie Hassaikai, Kai is normally levelheaded, thinks strategically, and, according to a conversation with Twice, seems to be decent at beginning. Whether he is acting or behaving truly, Kai does possess civil mannerisms and can come off as very sedate and classy even to people he considers potentially troublesome, this being discernible in his first meet with Mirio Togata and Izuku Midoriya. If aggravated, however, he may end up displaying a herculean and visible killing purpose, more fitting of his true character .
Kai is identical germaphobic and hates anything he perceives as unsanitary, frequently remarking about the dirty 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 lineage, soil or some other dirty substance comes in contact with Kai ‘s person, he will start developing hives and lose his common composure, becoming increasingly unhinged as a result. In drastic circumstances though, Kai will let go of his aversions in order to crush an foe that ‘s standing in his way, either due to pragmatism or out of swerve hatred .
Kai does n’t value humans, viewing people as pawns for their utilitarian measure and being bequeath to experiment on them to accomplish his objectives. He carries this opinion even towards the other members of the administration he has dedicating himself to since childhood, treating them as expendable sacrifices for his wellbeing and having no scruple in killing them off for the smallest mistakes. The masks worn by his close subordinates besides serve as a admonisher of this mentality ; he does n’t view them as desirable of sharing the same air as his. even Eri, his foreman ‘s granddaughter and the centerpiece of his operations, is not spared from this brutal manner of intend as he frequently shames and abuses her through threats and guilt trips, apparently as a method to force obsequiousness on her mind.

The only person Kai has ever shown true concern for is the former boss of the Shie Hassaikai, who rescued him from the streets at a identical young old age and raised him as a yakuza. Kai, to this day, still feels profoundly indebted to his bos for taking him in, being diamond in returning said debt by returning the yakuza to their glory days somehow. ironically, despite his sociopathic mentality and inhumane treatment of others, this makes his ideals about family a lot more personal than any early members of the organization. aside from this, he has besides 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. As a young yakuza, Kai was extremely pitiless and would kill anyone who did n’t show the Shie Hassaikai the proper respect, constantly getting into fights with rival gangs. Kai ‘s emboss, who was growing mindful of the violent, immoral path his subordinate was following to uphold the name of the Shie Hassaikai, attempted to sway him towards a more honest course, but to no avail ; Kai became more and more convinced that illegal, questionable dealings were the alone way the yakuza could ever restore their early respect. This would lead the cynical Kai to develop an matter to in the boss ‘s granddaughter, because he considered her rewinding abilities a gold opportunity for the Shie Hassaikai, believing that he could produce a Quirk-Destroying Drug out of her cells that would give the yakuza enough exponent to take control of the black market. Kai, despite his commitment and obligation to his superscript, could not accept his boss ‘s disagreement over the theme, attacking and leaving him in a comatose state to work on his plan unimpeded. Kai took over the Shie Hassaikai under the twist presumption that everything he was doing was for the sake of his knob and the organization, intending to bring his boss out of his coma after he completed his plan. In the end, Kai ‘s failure to recognize others and his own obstinate nature resulted in his precipitation. As noted by Tomura, even though Kai ‘s finish is to erase Quirks and restore the yakuza to power, he hypocritically himself used a Quirk to achieve that design. Despite his strong-minded attitude, he is capable of expressing on-key fear and shock, particularly post-defeat, after the League of Villains took away his intersection and ability to use his Quirk, screaming as the reality of being ineffective to bring the foreman out of his coma hit him. [ 9 ] As seen by the time of Tartarus ‘ multitude rioting and break, Kai ‘s imprisonment and the comatose status of his boss has left him as a blast of his former self, being rendered to a near-catatonic state and being unresponsive to everyone, anyone and everything approximately him. This is seen where he had small to no reaction of the multitude belly laugh during the Tartarus prison pause and late showed no chemical reaction to the appearance of Tomura Shigaraki and All For One, only being able to mumble the words “ Old serviceman ” in address to his boss and father figure. The only thing Kai cares about is reuniting with his emboss, mumbling on how he wants to see him again even when in airless proximity to risk. Kai is even shown crying out of sorrow while begging to apologize to the boss. While he even hates Izuku ( despite the latter having saved his life ) and holds no repent for his treatment of Eri, he did agree to make amends with Eri but only so he could save his bos .


Overall Abilities: Prior to his dismemberment, Kai was an incredibly mighty villain that garnered the attention of All For One, the most knock-down villain in Japan. He is a very dangerous person due to his Quirk, Overhaul, the cover he has on it, and his own lack of compunction. While in struggle, Kai focuses on cursorily dissembling his targets to kill them, or reshaping the terrain around him into a barrage of spikes to attack his opponents. He reshapes the ground to maneuver himself around the area, a well as counter incoming attacks. The ability to immediately rearrange his vicinity grants Kai multiple methods of dealing with his opponents, making him a massive threat from all ranges. [ 3 ] In the past, when he recruited Kendo Rappa, a heavy experience brawler, into the Shie Hassaikai, Kendo proposed that, in holy order to gain his servitude, Kai has to defeat him in battle. But merely as Kendo prepared an attack, the yakuza drawing card effortlessly disassembled, then reassembled Kendo. even after Kendo become a penis of the Eight Bullets, Kai was challenged by him 5 times, and swiftly overhauled and defeated the brawler with each attack, despite Kendo ‘s art. This implies that Kai possesses his own degree of high amphetamine and reaction time in order to accomplish this feat, as his Quirk requires him to touch his adversary for it to take effect. During the Shie Hassaikai Raid, Kai and his subordinates, Hari Kurono, Shin Nemoto, and Deidoro Sakaki were encountered by Mirio Togata, a U.A. High School scholar worthy of the No. 1 Hero spot, who swiftly dealt with the latter two Hassaikai Group members before facing off against Kai and Hari in another 2-on-1 battle. At the get down of the fight, Kai evaded one of Mirio ‘s punches, although he was left with a scribble on his face, before Hari was incapacitated. Kai was left temporarily holding his own against Mirio, but was soon overwhelmed by The Big 3 extremity ‘s top-tier art, which Kai himself noted was above his own abilities. however, Kai still found himself on the defensive from Mirio ‘s fighting spirit and beast intensity, until he was last capable of using reassemble spikes to immobilize and injure Mirio to a sufficient extent .
With the arrival of Izuku and Nighteye, Kai was forced to merge with Shin. This transformation granted Kai increased power, heightened speed, access to Shin ‘s Confession Quirk, and an overall atrocious appearance equipped with an extra place of arms through which the amalgamate Hassai Group leader can activate his master Quirk, showcasing a higher magnitude of manipulate of the said world power. [ 5 ] Kai ‘s inflate power allowed him to finally overpower Sir Nighteye, critically injuring the erstwhile buddy of All Might, and contend with Izuku, who was soon forced into raising his One For All output to 20 %. After being ad lib defused by Eri, Kai made a last-ditch attempt to prevail against the heroes, by fusing with Rikiya Katsukame, acquiring an flush greater degree of world power, and a more atrocious form. While he did engage Izuku, Kai began struggling against the hero ‘s “ One For All : Full Cowl – 100 % “, until he was wholly outmatched and defeated .

  • Enhanced Durability: Kai has great durability as he was assaulted by several of Mirio’s punches and was able to endure them as well as remain fully conscious despite still receiving bad injuries. This is an impressive feat, as a single attack from Mirio is occasionally enough to incapacitate somebody into submission. Later on, he was able to survive punches from Izuku who was wielding One For All at 100%. Kai also showed little reaction to having both of his arms destroyed by the League of Villains, albeit he still despaired over losing his two limbs.
  • Enhanced Reflexes: Overhaul possesses quick reflexes sufficient enough to quickly and consistently defeat Kendo Rappa at close range who is said to punch like a hail of bullets. Overhaul also displayed enough speed to dodge Mirio’s attacks.

Genius Intellect : Kai is an highly healthy person, with imaginative, strategic, and tactical wits. Following the yakuza custom of covering the trails of their crimes, Kai cleaned up his illegal actions by disassembling his targets first, taking what he needed from them and restoring their bodies to perfect condition in the end, thus avoiding incriminating evidence of violent attack from being left buttocks. [ 10 ] The most noteworthy aspect of Kai ‘s intelligence is the Quirk-Destroying Drug he created from the deoxyribonucleic acid of Eri, whose Quirk, Rewind, can rewind a target into a previous state. Alongside the drug, Kai besides developed an antidote serum, which can nullify the Quirk-neutralizing effects and restore the victim ‘s Quirk. With these two products in his possession, Kai planned to resurrect the glory of the Shie Hassaikai, and the yakuza in general, by using the drug and the serum as a way to accumulate big fiscal resources, arsenic well as a creature to induce reverence into the advanced Quirk-dependent population. The drug was intended to be sold through the black commercialize to villains, who would use them on Pro Heroes and after a while, the yakuza would distribute a serum that would undo the price done and restore the lost Quirks to the heroes. These products would be at a high price. Therefore, with the villains having the Quirk-Destroying bullets, the heroes having the serum, and Eri in the middle, the Shie Hassaikai can monopolize command of the commercialize, earning massive profit and finally emerging from the shadows. [ 11 ] During his brash meet with the League of Villains, Kai knew that at least one of its members would attack him with a Quirk, so he preemptively had Hari act as a sniper, equipped with experimental Quirk-Destroying Bullets, set as a precautionary measurement. A measure that was proven identical necessity as Mr. Compress lunged at Kai, only to have his Compress Quirk temporarily erased. When he battled Mirio Togata and observed his permeation Quirk, Kai altered the terrain to block the hero ‘s exit route, knowing that Mirio ca n’t use his intangibility to escape without leaving Eri behind. soon before the pillow of the Nighteye Squad ‘s arrival, Kai discreetly used his oddity to heal Hari, all so the latter can pretend to be unconscious, blindside Eraser Head, and overtake the expunction Hero. After defeating Sir Nighteye, Izuku arrived on the battlefield stronger than always, making Kai realize the One For All heir was holding back earlier. Since he merged with Shin and gained access to the latter ‘s Confession Quirk, Kai employed the lapp guerrilla war tactics the con artist uses in order to psychologically lure Eri back to his side, which was about successful had it not been for Izuku ‘s interference .

  • Leadership Skills: Being the leader of the Hassaikai Group, he is a very organized person that can factor in the abilities of multiple people in order to initiate coordinated, and well-planned attacks. An example of this was when he suggested that Twice and Himiko Toga reveal their Quirk capabilities so that they can prep for the impending arrival of heroes. Kai had carefully set various members of his Hassaikai Group on different levels of the Shie Hassaikai Compound, all in an attempt to slow down the heroes so that Kai can make his escape with Eri.


Overhaul ( オーバーホール, Ōbāhōru ? ) : Kai ’ s Quirk grants him the ability to disassemble anything he touches, angstrom well as reassemble it in any configuration he desires, effectively giving him fully control over matter. He can disassemble people to kill them or reassemble them to heal their wounds. He can besides do this to himself and even merge his body with others ; even allowing him to use their Quirks, such as Shin ‘s Confession and Rikiya ‘s Vitality Stealing. He can besides apparently regenerate his limb without having to make touch with himself and can reform and reshape their bodies any which room he wants. In struggle, Kai can freely manipulate his surroundings. He can modify the ground to maneuver himself and reshape the area into a state that is advantageous for him and harmful for his opponents. By touching his targets, he can wholly blow their torso apart, whether it be a limb or the entirety of it. After Mr. Compress and Tomura destroyed his arms, which are besides his Quirk Factor, Kai is presently unable to use his Quirk .


Power 3/6 C
Speed 4/6 B
Technique 5/6 A
Wits 5/6 A+
Ambition 6/6 S+

Kai’s stats, according to the Ultra Analysis Book


Plague Mask : Kai has always worn a mask. Since being under the Hassaikai, Kai normally wore a simple black disguise. After becoming a villain, Kai took to wearing his touch plague doctor mask that represents his efforts to cleanse the global of “ hero disease ”. Gloves : Kai constantly wears a pair of ashen rubberize gloves. This helps prevent him from getting his hands dirty, and normally removes his gloves before using his quirk. He wears them ultimately to avoid breaking out into hives .

Battles & Events

chapter Appearances

Anime Appearances


  • Kai’s name contains the kanji for “govern, regulate, administer” 治 ( ち ), chi ? 崎 ( さき ), saki ? 廻 ( かい )

    , kai ?

    • His first name notes his Quirk, Overhaul, that grants him the ability to disassemble and reassemble anything that he touches.
    • The “chi” in his surname has different meanings attached:
      • It could mean (to treat, to cure disease) how he believes everyone is sick, obsessed with finding a cure.
      • (To research, to specialize in a topic) noting his research on destroying Quirks.
      • (To punish, to discipline, to teach someone a lesson) referring to how he treats Eri as a subject for his bullets and force her to obey through intimidation and how he was hoping to use the Quirk destroying drugs to control society through fear.
      • (To exterminate, to kill) seen several times that he used his Quirk to kill others.
  • He is a B-Rank Villain.[12]
  • In the Fourth Popularity Poll, Overhaul placed 25th.
  • In the anime, Kai’s skin is seen breaking out in hives whenever his mysophobia is triggered.
  • Kai purposefully kept the scar that Magne gave him as a way to admit his fault in killing her, but also to keep an air of intimidation around the other League members.[13]
  • Kai’s English voice actor as a child in the anime, Caitlin Glass, also voices Mina Ashido.
  • Kai, along with Hari Kurono, is the second villain whose villain name is the exact same as his Quirk. The first being All For One and the thirds being Chojuro Kon and Kiruka Hasaki.
  • Kai likes the Hassaikai.[2]


  • (To Izuku) “When someone lays a finger on me, I can’t help but feel the need to cleanse myself.”[14]
  • (To Eri) “You were born to destroy people.”[15]
  • (To Eri) “Each and every one of your actions kill people. You are a cursed existence.”[15]


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