Is One Piece Fan Letter Canon or Filler? Explained

As a dedicated fan of One Piece since its humble beginnings, I can wholeheartedly attest to the significance of the latest addition to the series – the One Piece Fan Letter. Having followed this epic journey through thick and thin, I must say that this spin-off series is not just another filler episode to be skipped over lightly.


The recently published One Piece Fan Letter series on October 20th has sparked curiosity among followers of the popular anime series, One Piece. Some fans wonder if this fresh installment falls under the canon category or merely serves as a supplementary material. While the concept of filler implies it could be overlooked without affecting key storylines, for dedicated viewers, deciphering its relevance within the One Piece universe is vital.

Is One Piece Fan Letter considered part of the official storyline? Indeed it is. As per authentic sources, One Piece Fan Letter belongs to the canon spin-off series. In the context of anime, canon stories often refer to those developed directly from the primary source – in this case, the One Piece manga and related works. The One Piece Fan Letter was derived from Straw Hat Stories, a spin-off novel that received approval from One Piece creator, Eiichiro Oda. This endorsement signifies its integration into the larger plot, unlike episodes produced solely for the anime, which are often referred to as filler.

During a break in the airing of this anime until April 2025, some viewers speculated that the series could be a temporary side story, which they might choose to overlook without losing crucial main storylines. However, “One Piece Fan Letter” presents a fresh outlook. It delves into the daily lives of the Straw Hat crew as observed by ordinary people, with a focus on a girl who idolizes Nami. Unlike the typical high-stakes quest for One Piece, this spin-off explores the crew’s lives in a more casual setting. This distinct approach gives fans a rare glimpse into the crew’s personal lives outside their primary mission, making it both an integral part of the One Piece narrative and uniquely different from other tales within the story.

As One Piece anime reaches its 25-year milestone, One Piece Fan Letter offers new tales not previously animated, offering a unique perspective on characters without altering the primary storyline. These additional stories serve to deepen the series for devoted fans by providing further insights into their favorite characters.

Essentially, the One Piece Fan Letter is part of the main storyline rather than filler content, offering fans an engaging extension of the world created by Eiichiro Oda. For ardent followers of the Straw Hat crew and those eager to explore tales officially approved by Oda, this series is a valuable watch, enriching the epic tale of One Piece even further.

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2024-10-25 18:22