Unstoppable: Conquering the Multiverse from Naruto

[Multiverse Travel] + [Overpowered Protagonist] + [No System] + [Ruthless and Decisive] + [Single Female Lead]

The Uchiha clan has always been infamous throughout the shinobi world as a bunch of "arrogant brutes." But what if those brutes actually started using their brains? As the saying goes, even the gods struggle against a brute who knows how to think!

Perhaps some higher being couldn't bear to watch them recklessly charge toward their own extermination. And so, a cunning modern man who knows the plot inside out is reborn into the Uchiha clan-as the eldest son of its patriarch, Fugaku Uchiha, no less. The Uchiha clan's external brain is now online.

Seiichi Uchiha: "Trade schemes with Konoha's Big Four, led by the Third Hokage? Play politics and fight over power?

"Screw fighting over power! Every last one of you had better get your asses in gear and get stronger! Once we're strong enough, you could barge straight into their homes, screw their wives, and beat their kids, and all they could do is watch! Hell, if you don't kill them, they'll have to get on their knees, kowtow, and thank you for sparing their worthless lives!!!"

"Now tell me, what's our clan's goal?

"To become Hokage of the Hidden Leaf Village?

"No, no, no! Get this through your thick skulls: from this day forward, every last scrap of resources that falls from the sky in this shinobi world is going to belong to the goddamn Uchiha!!!"

Seiichi Uchiha: "Ahem. I was just kidding about all that. Our real goal is to make the Uchiha name resound throughout the multiverse!"

First World: Naruto!

Second World: One Piece!