Asami, who is frustrated because she can't be satisfied with her husband whose sex drive has declined even though their relationship is good. One day, she became close to Yamazaki, the chairman of the neighborhood association, and had an affair. Sex with Yamazaki was a pleasure she couldn't experience with her husband. Days of welcoming Yamazaki after her husband and son went to work. However, her affair was discovered by her son. Yamazaki stopped coming, and the affair came to an end. She tells herself that this is fine, but Asami's body, which has become lewd, has reached its limit. At such a time, she accidentally sees her son's dick…