One day, Naho witnesses his son Toor masturbating at the sight of an AV. My son can't get along well with a woman, so he always pulls it out alone. Knowing this, Naho tries to immunize a woman by using her own body, but she becomes worried about the adoration and sex difficulties of her son who only knows AV. Then my mother's sex education for my son began. And thanks to Naho, my son improved little by little, and I was able to keep up with his body many times.