Kyoko and her husband still have nighttime activities. That night, they were doing it together, but their son was watching. The next morning, after her husband left on a business trip, Kyoko went to wake up her son, where she found her son masturbating. Kyoko was surprised by the size of her son's penis. When Kyoko entered the room, her son hurriedly put on his pajamas. Kyoko said, "I'll help you," and began stroking his penis. The next morning, while Kyoko was preparing breakfast, her son hugged her and said, "I want to put it in you, Mom." In the evening, when her son returned home from work, she hugged him again. Kyoko resisted at first, but gradually she began to accept her son...