Episode 147 - Luffy’s First Victory! The Pirate King’s Challenge

Episode 147
Luffy’s First Victory! The Pirate King’s Challenge
Japanese: ルフィの初めての勝利！海賊王の挑戦
Rufi no Hajimete no Shōri! Kaizoku-Ō no Chōsen

The crew uncovers the final clue to the location of the One Piece, leading them to a hidden island filled with ancient ruins. As they explore the island, they encounter a powerful foe who has been guarding the treasure for centuries. The episode builds up the anticipation for the final showdown.