He transmigrates to the Warring States period of the Hokage world and even becomes the third younger brother of Madara Uchiha and Uchiha Izuna?
“Third Brother, Big Brother is giving you this Rinnegan to use.”
“Who are you? Are you a descendant of that woman?!”
“How do you evolve into the Eternal Mangekyō Sharingan?”
“Peace in the ninja world?”
…
For the first time, Madara Uchiha’s Sharingan lost its edge. “Otouto… what exactly is your path to peace?”
Uchiha Sakura turned her back to Madara Uchiha. “My path to peace?”
“Make everyone tremble in fear! Make them submit as they tremble!”
…
“Rather than false lies, I want pain that cuts to the bone!”
“What’s going on? Why have I returned to the moment of my death?!”
“Timeline Two?!”
“That’s right. Perhaps only a devastating disaster can make us selfish people unite!”
The synopsis doesn’t do it justice. Please read the story!
Hokage, one heroine, invincible!
It's funny and humorous, but there are some conflicts in logic, some conflicts in the background, and there are some missing words. Overall, it's pretty good.