When the daughter reached a certain age, she got a boyfriend and built a good relationship with the family. However, her boyfriend seemed to have a strong sex drive and often had sex in her room. The sounds even reached the bedroom of Riiko and her husband, who muttered, 'He's really something.' One day, when Riiko returned from shopping, her daughter was not there, but only her boyfriend was masturbating alone. Panicked, Riiko heard him say, 'I have such a strong sex drive that I don't know what to do.' 'It's not strange for a young man to have a strong sex drive,' she soothed, but his sexual urges were unstoppable... In her frenzied resistance, Riiko's legs began to shake and she could barely stand from the pleasure...
