Koichi is the son of Tabuchi, who owns a famous company. Even though he is nearly 30 years old, he is always lazy, refuses to work and sits at home all day with his phone in his hand. Worried that his son is not married and partly hoping that Koichi will change after marriage, Tabuchi decides to mate with him. The subject is Nao, the daughter of the department head of the partner company. Having a beautiful daughter as his wife, Koichi is naturally very happy. Nao didn't want to but had to accept Tabuchi's power. She also asks Nao not to sleep with anyone, including Koichi, until she gets married. A year later, Koichi and Nao finally get married. That night, Koichi longed to make love to his beautiful bride, but he was so nervous that he couldn't get an erection. The next day, Koichi has to go on a five-day business trip, leaving Tabuchi and Nao home alone. He quickly returned to his room and masturbated alone, trying to satisfy his repressed sexual desires.