KTDS-969 — My Sister Is A Beautiful, Athletic, Muscular Girl Who Is A Real Swimmer.

Momoka has been a member of the swimming club for 9 years! She's a professional swimmer who made it all the way to the prefectural championships. Her prominent abs, firm butt and thighs, and prominent F-cup breasts - her athletic, muscular body is like steel and is irresistibly arousing! Momoka becomes an obedient, submissive little sister and engages in a carnal, incestuous life with her perverted big brother! Her muscular body is licked all over, and her big brother thrusts his stiff, rock-hard muscle rod, as hard as his sister's, into her pussy, making her writhe in agony from his intense piston attacks!