IPZZ-656 Sex Toy Stand-In! A 10-Day Confinement Life with an Insatiable Yakuza Uncle Who Never Stops No Matter How Many Times He Cums - Hanamori Natsumi

The female protagonist, Hanamori Natsubu, is imprisoned for 10 days by a yakuza thug who treats her as a substitute sex toy. The thug possesses superhuman stamina, remaining insatiable no matter how many times he ejaculates, and subjects her to relentless sexual assault. From morning till night, she is repeatedly penetrated and filled with semen, leading to a complete breakdown of both body and mind. The ordeal involves various positions, creampies, facials, and training elements, as she gradually shifts from resistance to submission, ultimately becoming the thug's exclusive sex slave.