"I can only ask my mother... Hey? Isn't it okay? Hey!" Koji, who was abused by her for not being good at sex, asks her mother, Yumiko, to be a practice table. "Okay... but only once instead." Yumiko accepts Koji's enthusiasm even though she refuses several times. "You can't do it... Please stop!" She resists the unforgivable act, but her caressing her caress gradually changes Yumiko's body and climaxes many times.
