Figure | Jujutsu Kaisen | Suguru Geto - Hidden Inventory | Banpresto King of Artist

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 jujutsu sorcerer bred a deep hatred for non-sorcerers, leading to an incident where Suguru massacred over a hundred civilians in a single night. He was expelled from Jujutsu High and came to be known as the worst of all curse users. 

Jujutsu Kaisen (from Jujutsu Kaisen Wiki)
The story of Jujutsu Kaisen is set in a world where Cursed Spirits feed on unsuspecting humans and fragments of the legendary and feared demon Ryomen Sukuna have been lost and scattered about. Should any curse consume Sukuna's body parts, the power they gain could destroy the world as we know it. Fortunately, there exists a mysterious school of Jujutsu Sorcerers who exist to protect the precarious existence of the living from the supernatural!