A new family was created after the remarriage. Jun's stepfather and stepdaughter Jun get along well, and it should have been a happy scene... Jun, a high school girl with a big ass that is ripe for eating, is aroused by her stepfather, who can't stop lusting after her. He finally gives her an aphrodisiac and starts training her as a creampie masturbator to satisfy his sexual needs as much as he wants. Nighttime sex, big ass toys, masturbation without penetration... Jun loses her sense of reason and straddles her stepfather, pressing her pussy against him. She becomes a sex-crazed monster who devours her stepfather's dick with her big ass and pounding pistons.