第537集 - 最后的承诺！路飞对阵海上最伟大的海盗

Episode 537
The Last Promise! Luffy vs. the Greatest Pirates of the Sea
Japanese: 最後の約束！ルフィVS海の最強海賊たち
Saigo no Yakusoku! Rufi VS Umi no Saikyō Kaizoku-tachi

Luffy and his crew are pursued by a powerful fleet of ships sent by the World Government. The fleet is led by a notorious admiral who will stop at nothing to capture the Straw Hat Pirates. The crew must outwit and outfight the fleet, all while uncovering more about the secrets of the Grand Line.