Yuu had a huge gap with her son, Hiroshi, who was in the midst of puberty. Their relationship was so severe that they would curse each other whenever they met. "You're no good at studying, you're no good at sports, and you have no compassion. You probably won't be popular with girls either. Why did I even give birth to a kid like this?" As usual, they were exchanging complaints, but when Yuu said these words, Hiroshi's anger reached its peak, and he lost control and attacked her.
