Episode 349 - Heir to the Pirate Monarch! Luffy's Upcoming Quest

Episode 349
The Pirate King’s Successor! Luffy’s Next Adventure
Japanese: 海賊王の後継者！ルフィの次なる冒険
Kaizoku-Ō no Kōkeisha! Rufi no Tsugi naru Bōken

As the crew delves deeper into the island’s secrets, they uncover a dark truth about the island’s past and the forces that have kept it hidden for so long. The episode introduces a new antagonist who seeks to manipulate the island’s power for personal gain. The crew must stop this villain before their ambitions threaten the entire Grand Line.