Yuko who had a physical relationship with her son while her husband was away from home.I can't continue her immoral relationship like this forever.On the day her husband's business trip ends, she tries to pull the curtain on her sore relationship... "Is it really okay for my mother?"But she can't give up here.Shaking off her unsatisfied son, Yuko declares her immoral relationship to be dissolved.On this day, the long last sex of the two announced the beginning ....