My friend's amazing mom completely drained my essence... (Okae Rin JUL-552)

Rin Okae strictly disciplines her son, Yosuke, hoping he'll become as charming as her husband, but Yosuke consistently fails to excel in his studies. Just as she and her husband have been celibate for a long time, she sees pornographic books in Yosuke's room, triggering her sexual urges… Yosuke's friend, Atsushi, happens to be visiting and witnesses her ecstatic state. Instead of being scolded, he's instead allowed to play with his penis…