"I've been having sex with my wife less recently, and she's not responding as well as before, so it's kind of pathetic..." Atsushi reunites with his friend from college, Yuji. Yuji's wife, Minami, whom he married a few years ago, is not only beautiful but also sexually active, and he boasts about her, saying, "Marriage is great." Atsushi, whose sexual desire is overwhelmed, is frustrated. So he secretly visits Minami and forces himself on her. Aoi climaxes despite resisting Atsushi's uncontrollable sexual prowess, and after being creampied five days a week, Minami finally becomes dissatisfied with her husband...