, titled "The Vow of the Brotherhood!", serves as a crucial emotional reset and retrospective for the One Piece anime as it enters the legendary Marineford Arc . Released originally on June 27, 2010, the episode bridges the gap between the chaotic escape from Impel Down and the massive war about to erupt at Marine Headquarters. Plot Summary
Because Episode 457 consists largely of recapped footage, many official guides classify it as a or filler .
: If you are binge-watching and have a clear memory of the Alabasta and Banaro Island events, you can skip this episode to move directly into the action at Marineford.
: The core of the episode focuses on their mutual respect; while both aim for greatness, Ace firmly supports Whitebeard’s dream of becoming Pirate King, while Luffy remains steadfast in his own ambition. Viewer Guide: Skip or Watch?