What if the first successor chosen by Senju Tobirama had been Uchiha Kagami? What if Senju Tobirama's decision to die alongside the Gold and Silver Brothers for the sake of Konoha had been the work of both the Uchiha and the Senju? Knowing the truth, Uchiha Kagami supports Sarutobi Hiruzen's succession. Uchiha Kagami's Mangekyo can gain another person's memories by touching their dying body.
Aside from Susanoo, every Mangekyo has two unique abilities. What is the other ability of Uchiha Kagami's Mangekyo?
Option One: Indifferent observation as a spirit. “I will watch you all fall with my own eyes.”
Option Two: A reunion in the Warring States era, crossing space and time. “I wish I had met you sooner.”
Premise: An alternate course of events in the world of Naruto.
Well, the better the fate, the better.
Cheers (???_??)?