Why do anime have filler episodes?
In short: Filler exists because a weekly anime can adapt a manga faster than the manga is written. When the show catches up, studios either pause or invent original episodes to buy time. Long 2000s shows like Naruto and Bleach ended up roughly 40% filler; modern seasonal anime, which air in shorter runs with breaks, have almost none. Some filler is skippable, some is beloved, and a filler list will tell you which is which.
Get anime picks based on this article
Want a series that's worth every episode? Get anime picks matched to your mood and time.
Get anime picksPrefer to answer a few questions? Take the 8-question anime quiz →Why filler exists
A weekly manga chapter covers far less story than a 24-minute episode, typically somewhere between two and four chapters per episode. So a TV anime that airs every week without a break will eventually catch up with the manga it's adapting. At that point the studio has three options: stop, invent an original ending, or stall with original material until the manga moves ahead. In the 2000s, most long-running shows chose the third.
How much filler the big shows have
- Naruto (220 episodes): roughly 40% filler, including a famous run of more than 80 almost entirely filler episodes at the end.
- Naruto Shippuden (500 episodes): also around 40%.
- Bleach (366 episodes): over 40%, including four big original arcs. See our Bleach watch guide.
- Fairy Tail (328 episodes): around 20%, mostly three original arcs. See our Fairy Tail guide.
- One Piece (over 1,100 episodes): under 10%, because Toei slowed the pacing instead, stretching chapters across episodes.
Percentages vary slightly depending on whether you count "mixed" episodes, so treat them as approximate.
Types of filler
- Filler arcs: multi-episode original stories, like Bleach's Bount arc.
- Standalone filler: one-off comedy or side-character episodes.
- Recaps: episodes stitched from old footage.
- Mixed canon: episodes that adapt manga material but pad it with new scenes.
- Anime-original endings: when a show finishes before the manga, like Fullmetal Alchemist (2003), later remade faithfully as Brotherhood (2009).
Why newer anime have less
Since the 2010s, most anime air in seasons of about 12 or 24 episodes, with long gaps while the manga gets ahead. Jujutsu Kaisen, Demon Slayer and Attack on Titan all followed this model and have little or no filler. Even One Piece changed course in 2026, capping production at 26 episodes a year to match the manga's pace more closely.
Is filler always bad?
No. Some original arcs are well liked, such as Bleach's Zanpakuto arc, and comedy fillers can give side characters moments the main plot never does. If you watch a long show mostly to spend time with its characters, some filler is a bonus. If you want the story, skip it.
How to skip it
Search for "[show name] filler list." Fan-maintained lists mark every episode as canon, mixed or filler. Watch canon and mixed episodes, and pick and choose from the rest.
Frequently asked questions
Which anime have the most filler? Long-running 2000s shonen. Naruto and Naruto Shippuden are each around 40% filler, and Bleach a little more. One Piece, despite its length, is under 10%.
Should I skip filler? If you're watching for the story, yes: use a filler list to skip the original arcs. If you love the characters and want more time with them, some filler arcs are fun.
Want an anime with no filler?
Our anime quiz can match a series to your mood and how much time you have, with episode counts for each pick.