[Schwester (Inasaki Shirau)] Rollin 40 (Touhou Project) {Hennojin} [Full Color]

Koishi Komeiji has one goal on her self-declared dangerous day: wringing a baby out of her beloved onii-chan, whether he's awake to resist or not. Sleepy, unaware creampies melt into eager girl-on-top sessions as she grinds down on him with spinning heart-shaped pupils, begging him to dump every last drop straight into her womb and promising there'll be no regrets. X-ray cutaways follow his sperm swimming toward her egg while she gushes about the cock that made her a woman, and a 'Koishi-chan Rewrite' chapter closes things out by doubling down on the impregnation fun.