第521話 - 海賊王の玉座を賭けた戦い！ルフィの最後の闘い

Episode 521
The Battle for the Pirate King’s Throne! Luffy’s Last Fight
Japanese: 海賊王の座をかけた戦い！ルフィの最後の戦い
Kaizoku-Ō no Za o Kaketa Tatakai! Rufi no Saigo no Tatakai

The Straw Hat Pirates fight alongside the rebels to overthrow the corrupt ruler of the island. During the battle, they discover that the ruler was using the temple’s power to manipulate the weather and keep control over the inhabitants. The crew must stop the ruler from using the temple’s power to unleash chaos across the Grand Line.