Arita, an adult student living alone, meets married Kanna at a neighborhood bar after she quarrels with her husband. They share a table and drinks, grow close, and eventually begin a sexual relationship. He gives her a spare key, and whenever her husband leaves for work she arrives at Arita’s apartment carrying groceries. There she eases the loneliness of her failing marriage through intimate sex and repeated creampies with the younger adult man, continuing until his graduation.