YST-203 — Mizuki Yayoi, My Stepson, A Sex Monster Who Wants To Stick It In Me Whenever He Gets The Chance

The son is enjoying his daily masturbation routine. At that moment, his stepmother comes in at an inopportune moment. "Oh... I'm a boy after all, so I guess it can't be helped. If you don't mind, stepmom, can I help you?" he blurts out to get out of the situation... The son is still a virgin and has a twisted sexual fetish, so he takes this opportunity to get a sex education from his stepmother. However, the son's sexual desire is insatiable, and no matter how many times he ejaculates, his erection doesn't subside, and he repeatedly desires his stepmother's body...