A sister-in-law is terrified of her withdrawn brother-in-law who has an abnormal sexual desire and masturbates endlessly every day.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 sleeping pills and sacrifices her brother-in-law instead! He plays with the sleeping woman's body as he pleases, and even if he ejaculates, the woman wakes up due to continuous insertion, and even though he doesn't like it, he cums so much that he feels like he's fainting.