Shuichi lives alone until his wife Ayumi, who was hospitalized due to an accident, leaves the hospital. The story begins when Shuichi's mother-in-law, Maya, comes to take care of her. A big bust that can be seen even when wearing clothes, and a plump soft buttocks that make the skirt burst. All of them were things that Ayumi didn't have. Shuichi, who touches the "sex appeal" that his mother-in-law smells like, makes a mistake with Maya in order to escape from the ascetic life.
