My wife's hospitalized mother-in-law

Kanako's wisdom teeth have worsened and she was forced to undergo surgery and hospitalization. In order to take care of her husband Yukihiro, who is left alone, Kanako's mother, Sayaka, begins to go to the house for a while... Yukihiro had a moment with her stepmother for the first time in a while, and Sayaka felt that each time she had a lot of excitement with a young man. One day, Sayaka suddenly sees Yukihiro's erect crotch. The two of them panicked, but the incident didn't end there...