Naruto: Invincible in the World from the Night of the Clan's Annihilation

[Invincible from the start + subdues Konoha + Sage of Six Paths + truly satisfying, no suffering for the protagonist]

Lin Qiye's soul is transported into the Hokage world. On the night of the Uchiha Clan Massacre, he is nearly killed by a cold-blooded traitor. Furious at the traitor's attempt to finish him off, Lin Qiye wants to curse him out. Caught between life and death, the threat of dying awakens his System, and he gains the Sage of Six Paths module from the start.

Punch the Uchiha Byakugan weaklings, trample the Uchiha traitors.

Force Konoha into submission and become a god to the entire shinobi world!

[I can't do this synopsis justice. Read the story!]