Kenjaku

Kenjaku is one of the primary antagonists of the Jujutsu Kaisen series. He is an ancient sorcerer who pursues the goal of "evolving" humanity via cursed energy, thereby ushering in a new golden age of jujutsu sorcery paralleling the Heian Era. Using his Cursed Technique that allows him to transplant his brain into different bodies to possess them, he has inhabited different people throughout the centuries, assuming different identities.

Among those he possessed was Noritoshi Kamo over 150 years ago, as whom Kenjaku became known as history's evilest sorcerer and a stain on the Kamo Family. At some point in the past, he possessed Kaori Itadori, giving birth to Yuji. Currently, Kenjaku possesses the body of the deceased Suguru Geto — whom he chose for his Cursed Spirit Manipulation — and had assumed his identity as Pseudo-Geto (（）).

Appearance
It is unknown what Kenjaku's original body looked like. He can only be distinguished by the stitches and scars that circle the top of his vessel's head. These are from the procedure required to transfer Kenjaku's brain, his only personal feature, into his host. Unlike a conventional brain, Kenjaku's has teeth.

Personality
Kenjaku has a self-satisfied, tempered, confident demeanor, and even cheerful demeanor. However, he is twisted in every one of these aspects. Kenjaku is deeply egotistical and selfish. At his core, he only cares about achieving his core goals regardless of who he harms. Kenjaku's friendliness is accompanied by a smug attitude with an aura of condescension. Many people find him irritating, including his own allies. Uraume in particular finds Kenjaku to be disrespectful and overly full of himself.

Kenjaku has a tendency to go on profound monologues to anyone who will listen. He carries this same aura of superiority with him into battle. While easily overpowering Yuji, Kenjaku spoke to him in a calm manner and condescending fashion, as if he was educating his opponent while attacking him. Kenjaku treats anyone he used along the way with contempt and disinterest once they've served their purpose for his plans. This includes his creations, Choso and the Death Painting Wombs. Kenjaku deemed them failures for being "ordinary" and not breaking the boundaries of cursed energy, so he cast them aside.

Kenjaku manipulated Mahito's group into believing they were allies chasing a common goal. He did activities with them in their spare time and advised them in numerous ways. However, Kenjaku believes he's superior to cursed spirits and didn't give a second thought when his "allies" were dispatched in Shibuya. His only regret was being unable to absorb Jogo and Kenjaku didn't hesitate to absorb Mahito rather than help him, as he intended from the beginning of their relationship.

Kenjaku revealed the full extent of his plans to Yuki Tsukumo upon their first meeting. Unlike Suguru Geto, Kenjaku does not desire an ideal world without cursed spirits. In contrast to Yuki, Kenjaku believes the world should optimize cursed energy rather than escape from it. He wants to see what form the conglomeration of cursed energy will take and what changes it will bring to the world. He even admitted to Choso that he just wants to do it for the fun of having his curiosity satisfied, utilizing people's lives like they're game pieces for his own ambitions.

Kenjaku also has a profound contempt for all social structures, people and philosophies that favor passivity and maintaining the status quo and which he believes are cowards and incapable of achieving their goals, preferring to die rather than act. In particular he expressed his annoyance at the behavior of the Culling Game players who refused to participate and died after 19 days and his old friend Tengen who helped maintain the warped order of jujutsu sorcerers.

Abilities and Powers
Overall Skill Level: As a thousand-year-old sorcerer, he possesses incredible knowledge about curses, cursed techniques, and the jujutsu world. He was stated by Tengen to be the second most powerful barrier user after himself. During his possession of Noritoshi Kamo, he became known as history's evilest sorcerer, and he can create special grade cursed objects Cursed Womb: Death Paintings thanks to his experiments.

In Suguru Geto's body, he has led a group of incredibly powerful special grade curses and made them into a functioning team capable of being a great threat to the Jujutsu world and Japan. He makes great use of his current cursed technique, arguably more knowledgeable about it than its original user.

Master Hand-to-Hand Combatant: Due to his more than 1000 years of existence, Kenjaku has amassed various experiences with hand-to-hand combat. This was proven when he contended with and overpowered Choso in a battle of pure physical blows.

Immense Durability: During his fight with Yuki and Choso, he was able to take multiple hits from both special grades, even with Yuki using Star Rage, and was still able to continue fighting.

Immense Speed and Reflexes: Kenjaku was able to react to a point blank Piercing Blood, which moves at the speed of sound. He was even able to evade both Yuki and Choso multiple times during their fight.

Immense Tactical Intellect: Kenjaku's greatest asset, however, is his immense amount of intelligence and planning. Kenjaku can lay plans which are so advanced they can span millennia before coming to fulfillment.

In the modern age, he is the mastermind behind Mahito's group and the entire Shibuya Incident, including the eventual sealing of Satoru Gojo. He is why the group could even function, due to the vastly opposing nature of the cursed spirits' personalities. Kenjaku masterminded the attack on Jujutsu High and is the organizer of the Culling Game and its rules.

The only hindrance to his planning seems to be the Six Eyes, but he has seen a way around that in the modern age. He is a skilled manipulator, as he planned to make Mahito and Jogo grow, only to absorb them, something that he achieved with the former but not the latter due to Sukuna killing him. Due to his intelligence, he can quickly deduce the strengths and weaknesses of cursed techniques and has a deep, fundamental understanding of Jujutsu. He was able to deduce Tsukumo's Cursed Technique after seeing it and was able to make and adapt new plans to her fighting style during their fight.

Battles & Events
Shibuya Incident Arc
 * The Shibuya Incident
 * Jujutsu Sorcerers & Choso vs. Pseudo-Geto & Uraume

Trivia

 * According to Jujutsu Kaisen Official Fanbook:
 * He was able to take over Geto because his body was not cremated.
 * He doesn't heal the scar on his forehead because it's a Binding Vow.
 * The brain that takes over Geto's body is a physical part of Kenjaku's flesh so that ordinary people can see him. He has his own technique in the body that he left behind so that he can have two cursed techniques. When he moves over, the technique from his original body disappears, but he has a lot of tricks up his sleeve.
 * Mahito's group does not know someone has taken over Geto's body. They think he is a curse user who knows a lot.
 * He has a strictly business-only relationship with the other cursed spirits. In reality, he looks down on the cursed spirits who have organized themselves to overtake humanity and doesn't take them too seriously.
 * He can use his technique on his fellow cursed spirits in a one-on-one fight. Nonetheless, he believes Jogo and Mahito will be particularly tough.
 * He has never considered taking over the bodies of Gojo and Toji. Gojo is an impossible option since he is unbeatable. Toji isn't impossible, but if Kenjaku was to take over Toji's body, there’s a chance that Toji's Heavenly Restriction and Kenjaku's technique may clash.

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Kenjaku