Because Mayuki's husband was transferred, they both moved in with her parents-in-law. Her father-in-law is a man full of vitality, desire, and a high sexual ability. Every night, her parents-in-law have extremely passionate sex, with loud moans and the bed shaking, keeping Mayuki and her husband awake. She is stimulated by the wild and intense lovemaking of her parents-in-law, but her husband has erectile dysfunction, leaving her unsatisfied. Mayuki has a strong sexual desire and now witnessing her father-in-law's huge and strong penis thrusting vigorously into her mother-in-law, she feels excited, her panties becoming wet unconsciously. From then on, the thought of having sex with her father-in-law grows stronger. This desire accumulates until one day when her mother is out, she strips naked and rushes into the bathroom, surprising her father-in-law. He tries to stop her, but her arousal makes her unable to think of anything else, she just wants to satisfy her swollen vagina, wanting to experience the pleasure that her impotent husband cannot provide...

Diễn viên: Mayuki Ito