DASS-360 My son is a sexual monster. No matter how many times he ejaculates on his fair-skinned, big-breasted mom friend, he has an erection that won't subside. Tachibana Mary – Mary Tachibana

Azusa's son, Koichi, is a sexual monster who only thinks about ejaculating if he has the time. She is worried about her son, who sees even his mother as a sexual object when he loses his sense of reason, but suddenly he remembers his mother's friend, Mary Tachibana, and consults her about her son. The sexual monster battle between Koichi, who has an inexhaustible sexual desire, and Mary, who is willing to pay for sexual treatment, begins now.