Teiichi Niiya is a first-year middle school student from Seikyou Academy who stumbles upon the ghost of a girl named Yuuko Kanoe on one of his trips around the school and eventually helps her on looking for her lost memories. It is later revealed that he is Asagi's (Asa-chan's) grandson, the child that Yuuko saves 60 years ago. Teiichi joins the Paranormal Investigations club made by Yuuko in order to find more information about Yuuko's death. He gets easily flustered when Yuuko teases him. 