One Piece: Searching for the Rio Poneglyph with Robin

A tsunami carried Luo Yaming into the world of One Piece, not only making him young again but also granting him the ability to evolve objects by expending stamina. Pistols that automatically track targets, capes that let people fly, swords that slash out flames, flying ships, self-aware robots, Devil Fruits that turn people into demons, and more. When fighting Luo Yaming, his opponents would use up all sorts of his strange gadgets, only to discover that his greatest strength wasn’t his gear at all, but his own martial arts. But Luo Yaming had only just transmigrated, and he was facing a serious problem: He was sitting right on top of a giant named Saul. The island before them was, without a doubt, Ohara, which was about to be destroyed.