Is One Piece episode 378 filler?
One Piece episode 378 is canon — it adapts the original story.
Episode: 378 — The Promise from a Distant Day! The Pirates' Song and a Small Whale!
Classification: Canon
Air date: Nov 23, 2008
One Piece episode 378 is canon — it adapts the original story.
Episode: 378 — The Promise from a Distant Day! The Pirates' Song and a Small Whale!
Classification: Canon
Air date: Nov 23, 2008