My Paper Devil Fruit and the Idiot Pirate King

Roman, a transmigrator without a cheat, survived three brutal years as a minor pirate in the cutthroat One Piece world. Every day was a struggle, his powerlessness a constant reminder of his bleak future. But when a mysterious Devil Fruit, the seemingly useless Pasa Pasa no Mi, appeared, he seized his chance. He cut down his own captain, transforming mere paper into steel blades and impenetrable shields, claiming his destiny by force. Now, a powerful Devil Fruit user, Roman expects to carve his own path of cynical survival. Instead, he crashes into a rubber-bodied idiot named Luffy, who insists on making Roman his \"partner.\" Roman wanted solitude and ruthless efficiency, but this madman might just drag him onto a journey he never intended, forcing him to confront a world—and a crew—far more chaotic than any pirate battle.