Arc 9Impel Down to Marineford
Fanxin infiltrated Impel Down to find Ace, rescued Luffy from Magellan’s poison, and gathered prisoners and Revolutionary Army allies for an escape. At Marineford, Fanxin joined Whitebeard’s side and advanced toward the Execution Platform with Luffy to rescue Ace.
- Fanxin freed Rayleigh and the auction-house slaves, then fought Kizaru long enough for the Straw Hat Pirates to flee before Kuma scattered the crew across the island.
- Fanxin hid from Kizaru, infiltrated Impel Down in a pirate’s body, and found Ace on the secret sixth level with Inazuma’s help.
- Fanxin freed Ace and Jinbe, fought Magellan, and exchanged Ace for Luffy at the prison exit before leaving Luffy in Diamond Space.
- When Luffy insisted on returning to save Ace, Fanxin took him to Ivankov, who treated his poison while Fanxin freed Crocodile and recruited an elderly scientist.
- Luffy recovered, and Fanxin helped Ivankov and the okama escape Impel Down through an underwater route before Magellan could capture them.
- Fanxin arrived at Marineford during the battle, offered to work with Whitebeard, and released the escapees from Diamond Space.
- Whitebeard recognized Fanxin’s group as allies, while Luffy vowed to rescue Ace and become Pirate King.
- Fanxin and Langyue advanced toward the Execution Platform, bypassing Marines until Smoker blocked them and Fanxin warned him not to interfere.