Not an enemy, but Yuki, a young wife in a sexless marriage with her husband, spends her days processing the massive amount of masturbation left by her hypersexual father-in-law, feeling frustrated and resorting to masturbation to distract from her desires. Her father-in-law, with his insatiable lust, does not leave Yuki alone, pushing her over the line. Even knowing it's wrong, she can't help but move her hips as her womb is thrust upward by his hard cock, becoming addicted to the pleasure of his inside-out ejaculation. Engaging in animal-like continuous intercourse, sweating profusely and climaxing repeatedly, her writhing womb begins to crave her father-in-law again...
