The rivalry between Madara and Tobirama, to put it simply, is the Shura field between the brother-in-law, "You are a heartless man who cheated on my sister's feelings and killed her" and "My sweetheart values my brother more important than me and is willing to die for him". (Actually, it's not simple at all)
Although after finishing the coding, I really felt that this was a romance drama about perverts and scumbags, but it was pitiful that Madara, as an older brother and a normal person, has since moved away from the path of becoming a middle school student.
By the way, I would like to confess to Tobirama Juju, I find that I am always ruining his image.
Conception: