Noroi no Shoutaijou

A sorcerer named Kai offers to fulfill a person's wish for another's death in exchange for ten years of the requester's life. The story spans multiple volumes, each with a distinct title and theme, including "Labyrinth Girl," "Cinderella's Castle," "Killed on Your Birthday," "Half a Devil," "Stone Candy," "Night Without Stars," "Flower's Legacy," "Under the Skyscraper," "Hunting Happiness," "White Snow Hell Scroll," and "Onyx Curse."