When Yurine's daughter started dating a boyfriend, the family got along well together. However, the boyfriend had an intense sex drive and frequently engaged in sexual acts in her daughter's room. The sounds carried into Yurine and her husband's bedroom, and even her husband remarked, "He's really something." One day, returning home from shopping, Yurine noticed her daughter was absent and found the boyfriend alone, masturbating. Flustered, Yurine told him, "Having strong desires isn't strange," but his urges wouldn't stop. As she desperately resisted, her legs began trembling uncontrollably, and she could no longer suppress the mounting pleasure...