Arad gunsmith Kailon, after being trapped in the battlefield for three thousand reincarnations, traveled to the pirate world of the East China Sea. He carried the anti-tank gun "Rockbreaker", used artillery fire to repel pirates, protect the villagers, and first met Luffy. In Shields Town, he used his wisdom to expose the conspiracy of the navy and pirates. Later, in order to protect O'Hara's orphan Lena, he embarked on a new journey to protect the weak with technology and faith. This article is adapted from One Piece. If you like watching the original plot of One Piece, turn right when you go out. Thank you.