YST-203 Mizuki Yayoi, the breath of a sexual desire monster who wants to thrust into me if there is a chance

A son who enjoys daily masturbation. Mother-in-law comes in there at the wrong time. "Ah ... I'm a boy, I can't help it. Would you like to help my mother-in-law?" My son, who is a virgin and has a distorted sexual orientation, is taught sex education by his mother-in-law. However, my son's sexual desire is unequaled and the erection does not subside no matter how many times he ejaculates, and he repeatedly seeks the body of his mother-in-law.