Her daughter and husband both work, and because they're both busy, they're fighting more and more. Worried, Fumino and her husband invite her daughter and husband over to live with them. One night, while Fumino and her husband are having sex, her son-in-law sneaks home. He peeks through a gap and makes eye contact with Fumino. The next day, her daughter and husband go out, leaving Fumino and her son-in-law alone. Fumino whispers in her son-in-law's ear, "Remember what you saw last night..."