第610話 - 海賊王の遺産！ルフィの未来への約束

Episode 610
The Pirate King’s Legacy! Luffy’s Promise to the Future
Japanese: 海賊王の遺産！ルフィの未来への約束
Kaizoku-Ō no Isan! Rufi no Mirai e no Yakusoku

After successfully passing the island’s trials, the Straw Hat Pirates learn that the ancient civilization was once a powerful force that ruled over the Grand Line. They discover that the civilization’s downfall was caused by the World Government, who feared the power they held. The crew gains new insight into the ancient weapons and the true nature of the treasure they are seeking.