Ryuta always uses a matching app to enjoy a lustful sex life with married women. Until then, he had never been popular with women, but with the help of the app, he has met many slutty women and his sexual skills have improved rapidly. Frustrated married women are Ryuta's favorite targets because they are happy to have affairs with them. Today, he was matched with a high-class married woman and listened to her complaints about her husband and her life story...but it turned out to be Kana, who was at the top of the school caste system when she was a student. Kana also realizes that Ryuta was one of the dull, unpopular group of men when she was a student and tries to leave the place, but...