One Piece: Showboating in the City

Chu Chen transmigrates into the world of pirates. During the Paramount War, he obtains Whitebeard's Tremor-Tremor Fruit and Blackbeard's Dark-Dark Fruit, then unexpectedly returns to the modern city. With invincible power in his hands, he sweeps across the world, subdues Japan, conquers Western Europe, withstands nuclear weapons, and shatters America with his fists...!

He is the undefeated emperor of the city!