Their teenage daughter had a boyfriend, and the whole family had a good relationship. However, her boyfriend had a strong libido, and they had sex in her room multiple times. They could hear it in Yuri's bedroom, and even her husband muttered how amazing he was. One day, when she returned home from shopping, her daughter was not there and her boyfriend was masturbating by himself. Yuri panicked, but he came to her for advice, saying, "I'm worried about my strong libido. What should I do?"... She tried to calm him down by saying, "It's not strange for boys of that age to have a strong libido," but her boyfriend's rampant sexual desire just wouldn't stop... While she desperately resisted, telling herself that she couldn't get it, her legs started shaking and she felt such pleasure that she couldn't stand...