■"Sex isn't just intense," Aoki Satoshi, a mother who teaches boys how to play with pistons.

He is not only a lover, but also a single son who has sex. His mother, Atsutane, decided to use her own body to teach him sex so that his son would not have the wrong sexual knowledge. At first it was about the method of masturbation and sex treatment such as breastfeeding handcuffs, but it is a sex that I intended to do once, so jealousy reminds me of Onna's apology. The son, who knew this feeling of pleasure, also sought the mother's body further and continued to push her mother with his full physical strength.