DLDSS-510 I'll get your stepmother pregnant before Dad gets to sleep with her. - Haruhi Hibiki

"My stepmother will be embraced by my father again tonight..." My father remarried, and a woman named Hibine suddenly became my stepmother. Hibine was beautiful, and her voluptuous body was evident even through her clothes, which aroused me. The thought of her being embraced by my father made it impossible for me to control my excitement. And so, I decided to impregnate my stepmother before my father, who was grinning and saying to me, "You want a brother soon, don't you?", could...