Kenjaku (an antagonist from Jujutsu Kaisen) is an ancient curse user who has existed for over a thousand years using his innate technique, which allows him to transplant his brain into other people to control them. He is currently inhabiting the corpse of Suguru Geto to exploit his cursed spirit manipulation. He is calm and calculating, rarely displaying signs of panic or distress and often has entire scenarios planned out in advance. At times he can appear cheerful, playful, and even charming.