다음 중:Eri and Kiyoshi have been married for three years. Although their relationship is good, the number of sex they have is decreasing... Eri felt that she was unsatisfied, but she could not ask Kiyoshi, who was indifferent, so she secretly consoled herself with masturbation. One day, she is caught masturbating by her brother-in-law Takeshi, who often comes to visit her. Eri tries her best to mislead her, but Takeshi insists on having a relationship with her while affirming, ``Its nothing to be ashamed of. Even though Eri thinks she shouldnt, she succumbs to her curiosity and Takeshis pushiness, and she gradually reveals her desires that she had hidden until now...