Kai Chisaki

Take me to the Boss!! He's all I've got left! I gotta... tell him I'm sorry!!

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

**Kai Chisaki** ( *Chisaki Kai*?), also known as **Overhaul** (オーバーホール *Ōbāhōru*?), is the former Yakuza leader of the Shie Hassaikai. He served as the main antagonist of the Shie Hassaikai Arc.

**Kai Chisaki** (in Japanese: 治崎 廻 *Chisaki Kai*), also known by his villain name "**Overhaul**", is a major antagonist in the anime and manga series *My Hero Academia*. He is the leader of the Shie Hassaikai, a Yakuza organization comprised of villainous Quirk-users. Following the defeat of All For One, Chisaki believes he is destined to become the next ruler of the criminal underworld and plans to destroy the current Quirk society and return the Yakuza to its former glory.

He is voiced by Kenjiro Tsuda in the Japanese version, who voiced Orsted in *Mushoku Tensei: Jobless Reincarnation*. In the English dub, he is voiced by Kellen Goff, who also voiced Funtime/Molten Freddy, Fredbear, Daycare Attendant, Diavolo, Fiddlesticks, the Abyss Heralds and the Techno-Pirate. As a child, he was voiced by Caitlin Glass in the anime series, and Terri Doty as a child in video gaes.

## Appearance

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 due to 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. However, Kai's mask is removed after his battle with Izuku, and his mouth is uncovered. Following the yakuza's defeat, he lost both arms to Mr. Compress and Tomura Shigaraki during an escort to a villain hospital. Kai 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 no socks. 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. During his imprisonment in Tartarus, Kai's hair has become a bit longer, and he has developed some stubble. He also wears a standard red-orange inmate outfit with the sleeves still attached, and his arm stumps are bandaged underneath. After escaping from Tartarus, Lady Nagant changes Kai's inmate outfit with a long, light dress shirt and dark pants.

### Fusions

After fusing with Shin Nemoto, Kai gets two additional arms deformed with spiked claws and black parts of Shin's cape. His hair gets spikier, and his mask rips apart, seeming to be fused onto his face, which is also covered in black fabric. Shin is presumably conscious in the fused form as his mouth is used through Overhaul's right hand and his Quirk is in use. After fusing with Rikiya Katsukame, Kai's lower body is connected into a monstrous stone construct, protruding multiple appendages equipped with clawed hands. Kai's upper body is the same but lies within the mouth of the con, and his upper jaw has Rikiya's mask.

## Personality

Kai is a mysophobic, antisocial sociopath obsessed with returning the world to how it was before the Quirk phenomenon. Due to a combination of an old theory claiming Quirks derived from rats and his mysophobia, Kai believes that Quirks are a plague on humanity, having infected people with "syndromes" of heroism and villainy. He looks down upon those that use their abilities for either purpose, referring to acts of heroic sacrifice or petty crime as "sicknesses". Kai is highly determined to his ambition of eradicating Quirks, not only due to his phobias but also because such a thing would allow the Yakuza to reclaim the power they once held over society. Kai has no moral compass and an enormous ego, viewing himself as the only person in the world who's enlightened to the "true nature" of Quirks and deserving of the spot as ruler of the underworld after All For One's downfall. Despite this, Overhaul's values are noted to be paradoxical, particularly his overreliance on his own Quirk, whom he happened to name himself after. As the leader of the Shie Hassaikai, Kai is usually levelheaded, thinks strategically, and, according to a conversation with Twice, seems nice at first. Whether he is acting or behaving genuinely, Kai possesses polite mannerisms and can come off as very calm and classy even to people he considers potentially troublesome, evident in his first meeting with Mirio Togata and Izuku Midoriya. If aggravated, however, he may display a powerful and visible killing intent, more fitting his true character. Kai is very germaphobic 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. 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 Kai's closest subordinates also remind him of this mindset; he doesn't view them as worthy of sharing the same air as his. Even Eri, his boss's granddaughter and the centerpiece of his operations, is not spared from this brutal way of thinking as Kai frequently shames and abuses her through threats and guilt trips, seemingly to force subservience on her mind. The only person Kai has ever shown genuine 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. 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; Kai became more and more convinced that illegal, questionable dealings were the only way the yakuza could ever restore their former honor. This immorality would lead the misanthropic Kai to develop an interest in the boss's granddaughter because he considered her rewinding abilities a golden opportunity for the Shie Hassaikai, believing that he could produce a Quirk-Destroying Drug out of her cells that would give the yakuza enough power to take control of the black market. Despite his loyalty and indebtedness to his superior, Kai could not accept his boss's disagreement over the idea, attacking and leaving him comatose to work on his plan unimpeded. Kai took over the Shie Hassaikai under the twisted assumption that everything he was doing was for the sake of his boss and the organization, intending to bring his boss out of his coma after he completed his plan. Ultimately, Kai's failure to recognize others and his obstinate nature resulted in his downfall. As noted by Tomura, even though Kai's goal is to erase Quirks and restore the yakuza to power, he hypocritically uses a Quirk to achieve that plan. Despite his strong-willed attitude, he is capable of expressing genuine fear and shock, especially post-defeat, after the League of Villains took away his product and ability to use his Quirk, screaming at the reality of being unable to bring the boss out of his coma hit him. As seen by the time of Tartarus' mass riot and breakout, Kai's imprisonment and the comatose status of his boss have left him as a shell of his former self, being rendered to a near-catatonic state and being unresponsive to everyone, anyone, and everything around him. This refractory is seen when he had little to no reaction to the mass riot during the Tartarus prison break and later showed no response to the appearance of Tomura Shigaraki and All For One, only being able to mumble the words "Boss" about his father figure. The only thing Kai cares about is reuniting with his boss, mumbling about how he wants to see him again, even when close to danger. Kai is even shown crying out of regret while begging to apologize to the boss. While he still hates Izuku (despite the latter having saved his life) and holds no remorse for his treatment of Eri, he does agree to make amends with Eri, but only so he can save his boss.

## History

### Background

In the past, Chisaki was a young street child taken in by the Yakuza's boss. Hoping to repay him for his kindness, he has been developing bullets that could erase somebody's Quirk that he could sell on the black market. To achieve it, he used his Quirk, Overhaul, to take apart and reassemble a girl named Eri, who has the power to reverse a person's physical state. However, the Boss found Chisaki's actions unethical and was clearly alarmed by Chisaki's sociopathic mindset, threatening to kick him out of the yakuza. Only wanting to repay his debt to his father figure, he put him in a coma so that he could lead the Yakuza and distribute the Quirk Erasure Bullets, intending to wake him up once he completed his plan and showed him the results were worth it.

### Hero License Exam Arc

Chisaki is first seen stopping a group of villains called the Reservoir Dogs, disassembling them, and fusing them into parts of the truck. Believing them to be sick and in need of curing, Chisaki then heals and cures them of their "sickness". Chisaki then encounters the villain known as Twice and is taken to meet the League of Villains.

### Shie Hassaikai Arc

Chisaki later meets Tomura Shigaraki and tells him about how he hopes to rise in the criminal underworld after the power vacuum set by All For One's arrest, much to Shigaraki's annoyance. He offers a merger with the League of Villains, but Magne is against the offer. After Magne tries attacking Chisaki, he blows up her upper body and then severs Mr. Compress' arm after he retaliates. When Shigaraki tries to retaliate to avenge his comrades, Chisaki orders one of his minions to act as a human shield, protecting him. After Chisaki and Shigaraki calm down, Chisaki offers his business card to Shigaraki in case he wants to reconsider an alliance. One day, during Izuku's internship with Mirio, Eri manages to escape Chisaki's clutches. Realizing they were in a situation where they couldn't stop him, Izuku grudgingly lets Chisaki take Eri back. When Chisaki returns to his lair, he kills another one of his lackeys for failing to restrain Eri. He later has a meeting with Shigaraki, who demands to know what the quirk nullifying bullet is. Shigaraki is enraged and still feels as though they are not even, with Chisaki casually using one of his henchmen as an expendable shield to protect himself while Shigaraki is angry over Magne's death and Compress losing an arm to Chisaki. Shigaraki decides to pragmatically work with Chisaki, offering him Twice and Himiko Toga, secretly trusting them to betray Chisaki. When the heroes raid the Shie Hassaikai's hideout, he is seen talking to his father figure, apologizing and assuring him that everything will be alright. He encounters Togata Mirio, who manages to put up a decent fight. One of his underlings shot Togata with the Quirk nullifying bullet, but that didn't stop him. When he encounters Izuku, in an act of desperation, he fuses with Shin Nemoto. Chisaki manages to fatally wound Sir. Nighteye but after a brief fight with Izuku, Eri uses her Quirk to defuse them. Chisaki then fuses with Rikiya Katsukame. After learning what Eri could do, Izuku lets Eri ride his back so that he can use One For All at 100% without hurting himself and manages to completely dominate Chisaki in their battle. With Chisaki defeated and arrested, the police convoy who's taking him to prison is intercepted by the League of Villains. When Shigaraki has Chisaki cornered, he asks if he's going to kill him, but he has something worse in mind for him. Shigaraki has had a grudge against him for killing Magne and severing Mr. Compress' arm. As payback, he and Compress sever his arms, ensuring that he could never use his Quirk again. The League of Villains then make off with the Quirk Erasure Bullets while Chisaki is left in a helpless state screaming in despair that not only had everything he'd worked towards been stolen from him, but he could no longer bring his boss out of the coma Chisaki put him in. Chisaki later receives medical treatment for his arms and had his Quirk remodeled, but due to his dangerous ideology, he was still imprisoned in Tartarus.

### Tartarus Escapees Arc

Chisaki remained in Tartarus still until Tomura raided the prison with the Near-High End Nomus. Though many villains escaped, Chisaki was still sealed inside his cell as he could not open the door, due to his missing arms, but he was eventually freed by another villain, allowing him to escape as well, with his goal being to reunite with his boss. Chisaki met up with his rescuer, Lady Nagant, and told her about Izuku, who ruined his plans and suffered from "Hero Syndrome", making Nagant believe that it was fate. She asked him to identify Izuku, and he agreed on one condition. Nagant said she wouldn't take revenge for him, but Chisaki broke down and told her that he'd lost everything and his boss is the only one he has left, while silently apologizing to him. Chisaki later accompanied Lady Nagant in which the two came across Izuku Midoriya, having him cornered. As Nagant attempts to capture Midoriya, Chisaki remains off in the corner, rambling about wanting to see his boss. Slightly annoyed with his presence, Nagant assured him that he will see him once she's finished her mission, while at the same time wishing she had left him behind. Eventually, Nagant pointed her gun at Chisaki and threatened to shoot him though Chisaki was indifferent to this, only screaming at her to hurry up and finish so he can go back to his boss. Deku is shocked at the sight of his old enemy. As she took her shot, Izuku saved Chisaki from the bullet, despite all the things he'd done to him and Eri, with the hero telling him they'll talk later. After breaking Lady Nagant's rifle arm, he told her that her aim was slightly off when threatening to shoot Overhaul, showing that she didn't want to kill him and she still had a conscience inside. Unfortunately, All For One triggered an explosion within her body, seeing her as nothing but his tool. As she regained consciousness and got detained, Kai worried that she wasn't supposed to get caught, as she was his only hope of saying sorry to his boss. When Izuku noticed, Kai insulted him, but after Izuku talked about what he'd done to Eri, he was eager to go back to her but still held no remorse for his treatment of her, only thinking of how to use her to heal the boss. Izuku made a deal with him that if he made amends with Eri, he would assist him to heal his boss in Nagant's place.

## Abilities

* **Overall Abilities:** Before his dismemberment, Kai was an incredibly powerful villain that garnered the attention of All For One, the most powerful villain in Japan. He is a very dangerous individual due to his Quirk, Overhaul, the handling he has on it, and his lack of remorse. While in battle, Kai quickly dissembles his targets to kill them or reshapes the terrain around him into a barrage of spikes to attack his opponents. He reshapes the ground to maneuver himself around the area and counter incoming attacks. The ability to instantly rearrange his vicinity grants Kai multiple methods of dealing with his opponents, making him a massive threat from all ranges. In the past, when he recruited Kendo Rappa, a heavily experienced brawler, into the Shie Hassaikai, Kendo proposed that Kai had to defeat him in battle to gain his servitude. But just as Kendo prepared an attack, the yakuza leader effortlessly disassembled, then reassembled Kendo. Even after Kendo becomes a member of the Eight Bullets, Kai is challenged by him five times and swiftly overhauls and defeats the brawler with each attempt, despite Kendo's prowess. This celerity implies that Kai possesses high speed and reaction time to accomplish this feat, as his Quirk requires him to touch his opponent 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 student 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 fight. At the beginning of the battle, Kai evaded one of Mirio's punches, although he was left with a scratch on his face before Hari was incapacitated. Kai was left temporarily holding his own against Mirio but was soon overwhelmed by The Big 3 member's top-tier prowess, which Kai himself noted was above his abilities. However, Kai still found himself on the defensive from Mirio's fighting spirit and brute strength until he could finally use reassembled 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 monstrous appearance equipped with an additional set of arms through which the amalgamated Hassai Group leader can activate his original Quirk, showcasing a higher magnitude of control of the said power. Kai's inflated power allowed him to eventually overpower Sir Nighteye, critically injuring the former sidekick of All Might, and contend with Izuku, who was soon forced into raising his One For All output to 20%. After being spontaneously defused by Eri, Kai made a last-ditch effort to prevail against the heroes by fusing with Rikiya Katsukame, acquiring an even greater power and a more atrocious form. While he did engage Izuku, Kai began struggling against the hero's "Full Cowl - 100%" until he was completely outmatched and defeated.
* **Enhanced Durability**: Kai has excellent durability as he was assaulted by several of Mirio's punches and could endure them and remain fully conscious despite still receiving bad injuries. This feat is impressive, as a single attack from Mirio is occasionally enough to incapacitate somebody into submission. Later, he survived punches from Izuku, who wielded One For All at 100%. Kai also showed little reaction to having his arms destroyed by the League of Villains, albeit he still despaired over losing his two limbs.
* **Enhanced Reflexes**: Overhaul possesses quick reflexes sufficient 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 brilliant with inventive, strategic, and tactical wits. Following the yakuza tradition 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 assault from being left behind. The most noteworthy aspect of Kai's intelligence is the Quirk-Destroying Drug he created from the DNA of Eri, whose Quirk, Rewind, can rewind a target into a previous state. Alongside the drug, Kai also 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 considerable financial resources, as well as a tool to induce fear into the modern Quirk-dependent population. The drug was intended to be sold through the black market to villains, who would use them on Pro Heroes, and after a while, the yakuza would distribute a serum that would undo the damage 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 control of the market, earning massive profit and eventually emerging from the shadows. During his brash encounter 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 measure. A measure that was proven very necessary 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 Mirio couldn't use his intangibility to escape without leaving Eri behind. Shortly before the rest of the Nighteye Squad's arrival, Kai discreetly used his Quirk to heal Hari, all so the latter can pretend to be unconscious, blindside Eraser Head, and overtake the Erasure Hero. After defeating Sir Nighteye, Izuku arrived on the battlefield stronger than ever, making Kai realize the One For All inheritor was holding back before. Since he merged with Shin and gained access to the latter's Confession Quirk, Kai employed the same guerrilla warfare tactics the con artist uses to psychologically lure Eri back to his side, which was nearly successful had it not been for Izuku's interference.
* **Leadership Skills**: Being the leader of the Hassaikai Group, he is a very organized person who can factor in the abilities of multiple people to initiate coordinated, well-planned attacks. An example of this was when he suggested that Twice and Himiko Toga reveal their Quirk capabilities to 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 could make his escape with Eri.
* **Confession**: When fused with Shin Nemoto, Chisaki had access to his Quirk. With it, he can learn a person's true thoughts and feelings by communicating with them. Chisaki specifically used it to exploit and manipulate Eri's feelings as a way to get her back on his side.
* **Vitality Stealing**: When fused with Rikiya Katsukame, Chisaki had access to his Quirk. With it, Chisaki can increase his vitality by absorbing others through either physical contact or inhaling. As a result, this increases his stamina, in addition to increasing his size, making him physically stronger than before.

### Quirk

* **Overhaul** (オーバーホール *Ōbāhōru*?): Kai’s Quirk grants him the ability to disassemble anything he touches, as well as reassemble it in any configuration he desires, effectively giving him full control over the matter. Kai can disassemble people to kill or reassemble them to heal their wounds. He can also 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 Energy Suck. Kai can regenerate his limbs without having to make contact with himself and can reform and reshape their bodies any way he wants. In battle, Kai can freely manipulate his surroundings. He can modify the ground to maneuver himself and reshape the area into an advantageous and harmful state for his opponents. By touching his targets, he can completely blow their body apart, whether it be a limb or the entirety of it. After Mr. Compress and Tomura destroy his arms, which are his Quirk Factor, Kai cannot use his Quirk.

## Equipment

* **Plague Mask**: Kai has always worn a mask. Since being under the Hassaikai, Kai normally wore a simple black mask. After becoming a villain, Kai took to wearing his signature plague doctor mask that represents his efforts to cleanse the world of "hero disease".
* **Gloves**: Kai always wears a pair of white rubber 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.

## His Evil Ranking

### What Makes Him Close To Being Pure Evil?

* While he did lose his entire family and was homeless before being taken in, he destroyed any tragedy he had with his actions and the fact the boss tried to raise him benevolently and guide him on a better path, yet Kai chose to use drugs and do things against the Boss's will.
* Even as a child he had violent tendencies and would kill people for disrespecting the Yakuza, causing fights with rival gangs.
* He willingly made his boss ill in order to take control over the Yakuza after he found out about what he planned to do towards Eri.
* He very much crosses the moral horizon when he brutally tortured Eri (who is only a 6 years old girl), putting her through a childhood of abuse by cutting her arms and legs open to collect her blood cells.
* Once Eri ran out of blood he would deconstruct her (which kills her and is noted by Chisaki to be a very painful process) and then reconstruct her, which happened presumably hundreds of times, which is very horrific.
* He puts constant blame on her to make Eri feel as though she deserved her punishment, calling her cursed and putting the deaths of those killed by him on Eri's fault, making her severely depressed and believe she is worthless.
	+ While he would occasionally give her gifts, it was only to manipulate her and gain her loyalty so she wouldn't run away.
* Killed off and horrifically fused the Reservoir Dogs with wreckage (although he did bring them back afterwards).
* When Eri escaped and stumbled upon Lemillion and Deku, Kai attempted to lure them back in an alley and murder them both, only stopping when Eri comes back to him.
* Will kill anyone who touches him or calls him by his first name.
* Takes in suicidal people just to use them as human shields.
* Killed Magne and blew off Mr. Compress's arm simply for touching him.
	+ As revealed in the manga, although he could easily heal the scar Magne gave him, he chooses not to for no reason other than to serve as a wordless, threatening reminder both his side and the League suffered loses.
* He is brutal toward his minions, killing them without remorse if they happen to fail him or using them if he needs a human shield. Even Tomura Shigaraki was appalled by his lack of regard for his henchmen.
* One of his minions, Rappa, tried to defeat Overhaul, but every time, Overhaul would kill him off with his quirk and reconstruct him.
* Murdered Sir Nighteye by mutilating his stomach and giving him a painful death (making him the first villain in the series to kill a major hero) and tried to kill Deku and Lemillion. He also severely injured Lemillion by impaling him with his spiked rocks and destroyed Lemillion's Quirk for a bit by shooting him with a quirk destroying bullet, even taunting him about this.
* Threatened to kill his minions unless they fought the heroes with him, leading to them all being arrested.
* Fused with Shin Nemoto and later Rikiya Katsukame against their will, allowing him to take complete control over their bodies.
* He attempted to destroy all Quirks via his Quirk-destroying bullets so that the Yakuza (a criminal organization) could rule the criminal underworld.
* Although Tomura Shigaraki severing his arm making him unable to heal his boss from his coma it was not played for sympathy he deserved it due to his actions and his abuse towards Eri.
* Assisted Lady Nagant and All For One in trying to capture Deku.
* He angrily calls Deku a "diseased maggot" when he tries to speak despite Deku having saved his life moments earlier.
* When reminded of Eri after being rescued by Deku, he only focused on how he could use her powers to wake up his boss, showing no remorse for his treatment of her, something Deku calls him out on.
* While he seems to have a good working relationship with his right-hand man Choronostasis-whom he's known since they were kids-, and isn't shown mistreating him like his other minions, it is likely that he doesn't actually care for him and only treats him well for pragmatic reasons.
* While he did express some form of sentiment to the League of Villains, intending to bring out their full potential, he still was only using them for his goals and demonstrated no genuine care for them.
* Although he claims he was only acting on the best of intentions for the Yakuza, his "good intentions" are far too warped to be a genuine extremist, in which his good intentions are to crash down society so the Yakuza can take over the world with him as its head, showcasing himself to be just a simply power-hungry mobster.

### What Prevents Him From Being Pure Evil?

* He has genuine love for his boss, seeing him as a father figure and was attempting to bring the Yakuza back to power in order to pay him back his “debt” due to his boss taking him in as a child. He only put him in a coma when his boss threatened to kick him out of the yakuza, genuinely believing he was acting in the boss’s interests and that it was for his own good, even intending to bring his boss out of his coma once he finished his plan. After having his arms severed (which gets rid of his powers), he panicked while remembering his boss and realized he can’t undo what he had done to him and when released from his cell in Tartarus, the first thing he does is call out to his boss, affectionately referring to him as "father". In fact, the guilt of his boss still being in a coma appears to have almost completely broken his mind, as Kai can only think about him. He doesn't focus on anything else, continuously muttering that he wants to see his boss again after having broken out of Tartarus, demonstrating how much he means to Kai. He even displays some regret for what he did to his boss, as he really wants to reunite with him now and later admits that he wants to apologize to him, to the point of being driven to tears.

## What Makes Him A Hate Sink?

* In spite of his boss trying raise him into an honorable yakuza, he chose to do drugs and start fights with people against the boss' wishes. After he took over the yakuza, he gave himself a villain's name and allowed criminals to join the gang, something the boss would not approve of and neither did any of the underlings in the yakuza group.
* Put his boss into a coma when he opposed his plans of torturing Eri (though he did intend to wake him up after he finished his plan and thought it was the best for him).
* Tortured Eri, his boss' granddaughter and a child, for years by taking blood cells from her flesh and destroying her with his Quirk whenever she ran out of blood to offer. He also psychologically tortured her, calling her cursed and making her feel as though she deserved her punishment and was responsible for the murders he committed.
	+ Worse, not only Eri is only 7-years old, but the abuse Chisaki put her through traumatized her so much that she couldn't even smile for a while even after being saved from him.
* Constantly claims Quirks are a disease that need to be eliminated from the world (with his plan essentially being a form of cultural genocide) and heroes are corrupt for using them yet his own plan involves him using his Quirk to accomplish it and he's willing to use his Quirk to murder people for extremely petty reasons such as calling him by his first name or simply touching him.
* Only rescues suicidal people to turn them into his expendable weapons while exploiting their loyalty towards him, even naming his most powerful minions the "Eight Bullets", showing how little he cares for them.
* Uses his henchman as human shields, murders them for minor failures, and even fuses them with himself for more strength, disgusting even Tomura Shigaraki.
* Insulted Shigaraki for his lack of plans and although he killed Magne in self-defense, he blew off Mr. Compress' arm merely for touching him.
* Coldly misgendered Magne in front of Twice and Toga.
	+ As revealed in the manga, although he could easily heal the scar Magne gave him, he chooses not to for no reason other than to serve as a wordless, threatening reminder that both his side and the League's suffered loss in their fight.
* Forces all of his henchmen to fight the heroes while he flees with Eri leading to their arrest, with them knowing he would kill anyone who refuses.
* Had Shin Nemoto destroy Mirio Togata quirk and mocked Mirio about this afterwards.
* Mortally wounded Sir Nighteye in battle, causing him fatal wounds which he later died from in the hospital.
* Taunted Deku over Eri attempting to return, claiming she doesn't want him to save her. Once they got to the surface, he attempted to manipulate him into handing her over by mocking the possibility that he would be wiped from existence due to her unstable Quirk, claiming Eri "belongs to him" and only he knows how to use an "asset" like her.
* Although Tomura Shigaraki severing his arm making him unable to heal his boss from his coma it was not played for sympathy he deserved it due to his actions and his abuse towards Eri.
* Even after Deku saved him from Lady Nagant (though she wasn't actually trying to shoot him), he showed no gratitude, calling Deku a "diseased maggot" and only thinking of how he could Eri’s power to wake up his boss, having no regret for his treatment of her.
* Overall, his character serves as a deconstruction of Hate Sink, as his actions make him nothing but enemies and a common target so big, that he even causes the League of Villains and heroes to be technically working together during the raid on his base to take him down.

## Quotes

* (To Team Reservoir Dogs) *"There are so many capable men... and all they can think to do is rob a convenience store? Kinda weird... you'd think a group this big might just, y'know... have bigger goals than that... You're all sick. And you need a cure."*
* (To Eri) *"You were born to break people... Every move you make gets people killed! Your very existence is cursed!"*
* (To Izuku) *"I'm a clean freak. When someone touches me... I lost it. I've never been pushed this far before..."*

## Trivia

* Kai's name contains the kanji for "govern, regulate, administer" ( *chi*?), "promontory, cape, spit" ( *saki*?), and "revolve, return, curving" ( *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.
* 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.
* 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.
* The orphanage Kai lived at as a child bears a strong resemblance to the one Dabi was kept at by All For One.

## External Links

* Kai Chisaki on the Villains Wiki
* Kai Chisaki on the *Boku No Hero Academia* Wiki
* Kai Chisaki on the Near Pure Evil wiki.
* Kai Chisaki on the Hate Sink Wiki