40-year-old Satsuki has been married for eight years. Initially, she and her husband were deeply in love and frequently intimate, but over time their relationship became sexless and emotionally distant. Recently, both have started seeing other people, though they have no intention of divorcing and claim to be satisfied with the current state of their marriage. However, needing funds for dating expenses, Satsuki decided to take advantage of her still-beautiful body and enter the adult industry.