Yuko and Eiji live as a married couple. Yuko's older brother, Katsukazu, has been living alone in their childhood home since their mother passed away six months ago. Worried about his situation, Yuko and Eiji visit the house and find it in complete disarray. Unable to stand the mess, Yuko asks Eiji to help clean up. They begin regularly visiting the house to clean together, using it as an opportunity to reconnect with her brother and strengthen their own marital bond.