Episode 455 - Luffy’s Promise! The Final Showdown at the Grand Line

Episode 455
Luffy’s Promise! The Final Showdown at the Grand Line
Japanese: ルフィの約束！グランドラインでの最終決戦
Rufi no Yakusoku! Gurando Rain de no Saishū Kessen

The crew is separated during the fight, and each member faces individual challenges. While some try to protect the artifact, others face off against powerful World Government agents who have unique abilities. As the Straw Hat Pirates regroup, they realize the true nature of the artifact and what it could mean for the Grand Line.