``What are you doing!'' Saki was confused when her son Yuta pressed her. Yuta peeks into Saki's masturbation and becomes excited. I told her that if she was lonely, I would comfort her. That can't be allowed. As a mother, Saki tries to stop Yuta from running wild. However, her body, which has fallen into extreme frustration, reacts to the passionate caress... A mother's rationality? Is it a woman's instinct? Saki's heart sways between the two.