A stepmother's sex education on a sexually awakened husband and his burden: gentle yet intense ejaculation management. (Isshiki Momoko ROE-060)

Momoko marries a man with a child. She wants to get along well with her stepson, Yuta, but he keeps his distance. When she goes to talk to Yuta, whose grades have recently dropped, she discovers that he can't control his sexual desires and is addicted to masturbation. Even without blood ties, she's still his mother, so Momoko uses her own body to provide sex education. Under his stepmother's ejaculation control education, Yuta repeatedly reaches climax, and with Momoko's efforts, the two gradually close the gap...