Yui is a married woman who has been married for 15 years. She has suspected her husband of cheating for some time. One day, she confirms it. When asked by the woman, her husband admits to the affair. From then on, her husband becomes more rude towards her. When he can't sleep, he clings to her. Their family slowly falls apart... The woman meets a man on a dating app, wanting him to know the pain of being cheated on, and they show off their sex to her husband at home.