Naruto: Drawing the Divine White Tiger from the Start

After transmigrating into the Hokage world, he becomes an ordinary ninja in Root. Trained by Root from childhood, he gradually earns Danzo's trust as the Third Shinobi World War approaches, thanks to his foresight and exceptional abilities.

He proceeds cautiously, secretly building up his strength, then kills Danzo in one fell swoop and forces Hiruzen Sarutobi to step down.

Danzo: You bastard, is this how you treat your benefactor?

Sakumo: Sorry, Danzo, but you are not my benefactor. Go to the Pure Land in peace. I'll take over Root from here.

Hiruzen Sarutobi: Sakumo! What are you doing? Are you trying to stage a coup?

Sakumo: Lord Third, you're old. I'm just going along with the people's wishes and asking you to step down.