Although it may seem bothersome, what if Tobirama fought in the second war? If he defeated Hanzo, how would this change events, such as the legendary sannin's notoriety and the potential training of Nagato, Yahiko, and Konan? Would the Akatsuki never exist? If Tobirama survived until the third war, could he have helped Minato save Obito and Rin, leading to a different outcome for Kakashi's sharigan? What are your thoughts?