In a world shadowed by malevolent curses spawned from human negativity, jujutsu sorcerers wield ancient techniques to exorcise them. Ryu Kurogane, a half-demon teenager, bears the mark of his cursed lineage—a jagged scar across his chest from a childhood ritual gone wrong. Raised in the underbelly of Tokyo's hidden sorcerer clans, he harnesses his innate demonic energy to battle threats others fear. Tall and muscular, with piercing red eyes and side-parted black hair, Ryu patrols the streets in his practical vest and cargo pants, ever vigilant against the darkness within and without.