One day, a mother catches her son Atsushi masturbating while looking at pornographic magazines. Knowing that her son struggles to get along with women, the mother tries to build his immunity towards women using her own body. However, she becomes worried about his clumsy caresses and sex techniques, which he only knows from pornographic magazines. From there, the mother begins to educate her son sexually... As time passes, the son gradually improves, and the mother and son repeatedly unite their bodies...
