Self-proclaimed 'lover of a married woman's heart' AV director Koji Takahashi invites his wife's female friend to stay at his home with impure intentions. Nothing happens to the married woman spending the night alone with him... Yumi, 38 years old, in her eighth year of marriage, no children, works at a Western confectionery shop. Hearing that the landlord is an AV director with many interactions with married individuals, she comes to consult about marital problems. She asks if the reason they can't have children is because her husband's penis is too small. After comparing his erect penis and receiving a lecture on how to increase erection size, they start mutual caresses. 'It looks so good... I want to try it' leading to insertion, she repeatedly shouts 'amazing' and faints from orgasm. Late at night, he finds her using a toy to relieve her urges, scolds her, and brings her to climax. They have sex in the morning too, enjoying his larger penis than her husband's.
