Makihara Kousuke works as a substitute janitor of woman dormitory, Sazanami So, while the regular janitor, who is his aunt, travels abroad. The contract term is almost over, but he has one thing worried about. Among the member of the dormitory, only Jinnai Mio doesnt open out to him and doesnt try to eat his dishes. Then, he makes the former janitors favorite dish to let her eat.