Episode 722 - Luffy's Ultimate Defense! The Climactic Fight to Safeguard the Pirate King's Heritage

Episode 722
Luffy’s Last Stand! The Final Battle to Protect the Pirate King’s Legacy
Japanese: ルフィの最後の立ち向かい！海賊王の遺産を守るための戦い
Rufi no Saigo no Tachimukai! Kaizoku-Ō no Isan o Mamoru Tame no Tatakai

Luffy and the crew uncover the truth about the treasure: it’s not just gold, but an artifact with the power to control the sea. The pirates from the rival crew, led by a notorious pirate captain, engage in an all-out battle with the Straw Hat Pirates. The crew’s skills and teamwork are tested to the limit as they fight to prevent the artifact from being misused.