Episode 854 - Luffy’s Final Challenge! The Last Battle for Pirate King’s Throne

Episode 854
Luffy’s Final Challenge! The Last Battle for Pirate King’s Throne
Japanese: ルフィの最後の挑戦！海賊王の座を守るための戦い
Rufi no Saigo no Chōsen! Kaizoku-Ō no Za o Mamoru Tame no Tatakai

The crew encounters a powerful guardian who has been protecting the secrets of the Lost Sea for centuries. To proceed further, Luffy and his crew must prove their worth by overcoming a series of trials set by the guardian. These trials challenge the Straw Hats’ strength, intelligence, and loyalty, but they push forward in pursuit of their ultimate goal.