One Piece: From the Start, I Obtained a God-Tier Devil Fruit

(Devil Fruits + Haki + martial arts, both leads are powerful) A young man transmigrates into the vast and tumultuous world of pirates. He refuses to accept a world ravaged by pirates. Let me save the world! After Kaido was beaten by his fists, he said, "Haki really does reign supreme, Noah. Kill me." Mihawk was eager for battle: "Noah, show me the World's Strongest spirit." As Pangaea Castle teetered on the brink of collapse, Noah announced to the world: "The ones who will save the world aren't pirates, and shouldn't be pirates. They're the Marines. I'll show you that even the Celestial Dragons can bleed and die."