Using the Impure World Reincarnation technique, he was unexpectedly reincarnated into the world of One Piece, becoming the son of Dragon and given the name Luffy. Although the name is the same, his core has changed, and thus his path is different. He initially intended to skip the Devil Fruit and join the Navy, but after unexpectedly encountering the red-and-white-haired princess, he discovered how unfamiliar the world was. How can this be a movie world? How could my King Luffy possibly have a childhood friend and a romantic comedy?