Suguru Geto is an antagonist in both the Jujutsu Kaisen series and its prequel Jujutsu Kaisen 0: Jujutsu High. He was originally a student of Masamichi Yaga's alongside Satoru Gojo and Shoko Ieiri at Tokyo Jujutsu High. His experiences as a sorcerer bred a deep hatred for non-sorcerers, leading to an incident where Suguru massacred over a 100 civilians in a single night. He was expelled & came to be known as the worst of all curse users.