One Piece: No One Understands Conqueror's Haki Better Than I Do

【Top-Tier Devil Fruit】【Multiple Heroines】【Mutant Sharingan】【Observation Haki Killer】【Absurd Comedy】【Pulse-Pounding Power Fantasy】 Your bloodline is ordinary, your talent is ordinary, and your background is ordinary. What makes you so confident? A hundred times the effort? Gol D. Caesar: "I've got a cheat!" After transmigrating into the world of One Piece, how can he stand out among all those rich kids who made it on their fathers' coattails? Other people transmigrate into the world of One Piece to find the One Piece and become the Pirate King. Gol D. Caesar came here purely to watch the fun. Armed with a mutated, pirate-world version of the Sharingan and monstrous natural strength, he snuck aboard the Roger Pirates' ship. While others sweat buckets practicing swordsmanship, he takes one look and masters it instantly. While others fight hand to hand for their lives, he casually pulls out a Seastone sniper rifle. "If one shot can blow their heads off, why would any idiot bother slashing at them? Come on, the times have changed!" Facing a furious Marine Admiral, Gol D. Caesar blows the smoke from his muzzle and looks utterly innocent. Rayleigh watches Caesar use the Breathless Sword Art he just created with absolute mastery, and falls into deep self-doubt. Shanks breaks his sword in the middle of the night, and every last bit of Buggy's secret stash gets cleaned out. The once-heroic and tragic Roger Pirates are transformed, thanks to this scheming menace, into a band of ruthless outlaws with a bizarre new style!