Her 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 be heard in Rin'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 alone. Rin panicked, but he asked for her advice, saying, "I'm worried about her strong libido. What should I do?"