Kenjaku (羂けん索じゃく, Kenjaku?) is one of the primary antagonists of the Jujutsu Kaisen series. He 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 has inhabited different individuals throughout the centuries and assumed their identities. currently possesses suguru geto's body. disguising as a nurse.