Yu finally enrolled in history, and has been taking history classes recently. I learned a very interesting thing. An unexpected idea occurred to me when I was doing my homework!
I just took a history class, and I don't know much about it. I'm just imagining it. If there is any inconsistency with historical facts, please forgive me and treat it as a fictional world! Laugh~Irresponsible fish. Welcome those who have research history to study Affinity Fish~