Two years after the Summit War in which Straw Hat pirate Luffy lost his brother Ace, the story takes place on the Sabaody Archipelago. The protagonist, a young girl who has a strong admiration for Nami, sets off on a small adventure. This is an ensemble drama that focuses on people who do not "pursue" ONE PIECE, depicting the reunion of the Straw Hat Pirates from their perspective. (Source: One Piece Official Website)
AniWave is the best site to watch
One Piece Fan Letter SUB online, or you can even watch
One Piece Fan Letter DUB in HD quality. You can also find
Toei Animation anime on AniWave website.