Although they are not on bad terms, Yuki, a young wife who is not having sex with her husband, is frustrated by the large amount of masturbation tissues that her father-in-law uses, and she spends her days masturbating to relieve her sexual desires. Her father-in-law, who has a fiery sexual desire, will not leave Yuki alone, and he forces her to cross the line. Even though she knows it's wrong, her hips move on their own as his hard cock thrusts into her uterus, and the pleasure of his creampie filling her vagina becomes addictive. She sweats and cums over and over again as they continue to have sex like an animal, and her throbbing uterus craves her father-in-law again...