Mother Kaori was delighted that her daughter and her childhood friend had finally become a couple. She smiled warmly as they shared dinner together every day and made plans to spend the night. But as the night deepened and her daughter's room grew quiet, Kaori's heart began to race uncontrollably. Suddenly, her daughter ran out of the house in tears. Shocked, Kaori asked the boy what had happened, and he confessed that their first time hadn't gone well. Right then, he became erect, took Kaori's hand, and pulled her into a tight embrace. Confused and flustered, Kaori tried to resist, but he begged her to teach him how to do it right, clinging desperately to her body.