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 carries a tempered and confident demeanor but he is a deeply egotistical individual concerned only with himself. He is confident to the point of arrogance and projects a cheerful yet condescending attitude. Even Kenjaku's allies are often displeased with his antics. Uraume in particular finds him disrespectful and irritating. Kenjaku thinks himself superior to most, especially cursed spirits. He manipulated Mahito's group into aiding his own goals under the guise of being their ally, all while planning to take their powers for his own. Kenjaku spent time with the cursed spirits and played games in their spare time but didn't give a second thought to absorbing Mahito rather than helping him in Shibuya.

This relaxed and condescending attitude remained during fights, where he would praise the abilities of his opponents. On occasion Kenjaku will find himself pausing, claiming that he is talking like somebody else; this implies that some of his habits come from the original Geto's personality influencing him.

As shown in his conversation with Yuki Tsukumo, Kenjaku believes that the next stage of human evolution is not "removing themselves of Cursed Energy" but is instead "optimizing cursed energy". This belief is the main reason for his actions, his unethical and inhuman experimentation on Cursed Spirits and human beings, and the primary motivation for his current plots.

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