One day, Naho catches her son Toru masturbating while watching AV. Toru struggles to get along with women and always does this alone. Knowing this, Naho decides to use her own body to help him build immunity to women, but she becomes worried about his clumsy caresses and sex skills, which are only based on AV knowledge. Thus begins the mother's sex education for her son… And thanks to Naho, Toru gradually improves, and after many times of combining their bodies…
