Momoko, a mother, finds out that her son Yosuke has just had his first sexual experience and can't help but wonder who it was with. She secretly hears about it from her son's best friend, Yuya... Yuya, who had always had a crush on Momoko, takes this opportunity to tell her that he is still a virgin and confesses his feelings for her. Momoko says she will take his virginity "just once," but she becomes addicted to Yuya's sincere feelings and intense thrusts. Momoko, wet with the pleasure of having intense sex with a young man, cannot forget the pleasure...