VENU-746 Nao Wakana plays with her dirty father-in-law's wife who has retired and has free time.

Nao, the middle-aged wife of a married couple living happily in a house, has a certain problem. That meant that she no longer had any activities with her husband. Then there was the stepfather who lived with her and sexually harassed her. Nao turns a blind eye, thinking that it was an act he did out of loneliness after losing his wife, but his father-in-law's sexual harassment escalates, taking advantage of Nao's attitude. One day, Nao's frustration finally reaches its limit.