A sister-in-law is terrified of her withdrawn brother-in-law who has an abnormal sexual desire and masturbates endlessly every day. She feels a sense of crisis as she does not know when she will be attacked, so she puts a woman who came to her house to sleep with a sleeping pill and sacrifices her brother-in-law instead! He plays with the sleeping woman's body as he pleases, and even if he ejaculates, he immediately erects and inserts himself continuously, so even if the woman wakes up, he doesn't like it, but he cums so much that he feels like he's fainting.