So if you disagree with your dad and he just went up and got killed you won't be sad in anyway?
Read the manga cause the death of the fathers will have a major impact. :|
This. Even though I butt heads with my parents sometimes, I would be pretty sad (and if it was in a similar environment as Madara's, I would probably seek revenge as well) if my parents were killed, much less if it happened right in front of me.
OT: Agree, don't know how it will go down, but I could see how Tajima would end up dead. As mentioned above, I believe that both Madara and Hashirama will try to stop their respective families from fighting, but could maybe even see both Tajima and Butsuma dying. That'd be an interesting twist, if one was killed during the battle, and the other sustained fatal injuries and gave a heart-warming speech to their son.