Episode 647 - Luffy's Final Thrust for Liberation! The Ultimate Pounding for the Pirate King's Dominion

Episode 647
Luffy's Last Stand for Freedom! The Ultimate Battle for the Pirate King’s Throne
Japanese: ルフィの自由のための最後の立ち向かい！海賊王の座をかけた戦い
Rufi no Jiyū no Tame no Saigo no Tachimukai! Kaizoku-Ō no Za o Kaketa Tatakai

The Straw Hat Pirates reach a mysterious island where the inhabitants possess strange powers. The crew becomes entangled in a conflict between the island's residents, who are divided over an ancient prophecy. Luffy and his crew get caught up in the dispute but quickly form alliances with those who seek peace. Meanwhile, a new threat emerges, testing the crew’s ability to work together.