"In the moment she becomes a mother... I'll fertilize her too" The sister's couple, near childbirth, are at the peak of happiness. The divorced elder sister, seeing this scene, goes mad with jealousy. "Despite being an incompetent younger sister, to be happily enjoying life with such a kind husband is unbearable." One day, she catches her brother-in-law trying to masturbate while his wife is away. Seeing his penis, swollen to the point of bursting after ten months of abstinence, she feels a shock throughout her body and can't help but attack him, forcing non-consensual sex with ejaculation inside. She becomes infatuated with his incredibly potent penis, indulging in pleasure until she gets pregnant...
