Chiharu, who overheard her son and his close friend Kazuya having a conversation about being a virgin. Chiharu, whose daily frustrations and maternal instincts are on the verge of exploding, sees Kazuya's pure teenage curiosity about sex—something he has yet to experience. Taking advantage of her son's absence, she invites Kazuya into their home and begins guiding him in the ways of sex, saying, 'Are you interested in a woman's body? If so, I can show you...'
