Kyouhei goes on a goukon with his pals, including his old neighbor, Shiba, after relocating away from his previous town to escape away from the tragedies that occurred. After a night of drinking, he and Shiba uncover a dead, bloodied body in the elevator. His younger sister, Utao, with her Kamisama Doll, informs him that Aki, an old acquaintance, and his Doll are the culprits.