Episode 685 - Luffy's Heritage! The Fight to Claim the Pirate King's Throne

Episode 685
Luffy’s Legacy! The Battle to Become the Pirate King
Japanese: ルフィの遺産！海賊王になるための戦い
Rufi no Isan! Kaizoku-Ō ni Naru Tame no Tatakai

The crew continues to fight off the rival pirate crew as they uncover more about the island’s ancient technology. The Straw Hats learn that the artifacts they’ve found are part of a larger puzzle that could lead them to the final piece of the treasure they’ve been searching for. However, new enemies emerge, threatening to stop them in their tracks.