The short answer is: But the long answer is far more interesting. It involves the collapse of a studio’s schedule, a canonical time-skip, and the philosophical difference between "filler episodes" and "filler pacing."
By ending the weekly serialization, Black Clover avoided the filler death spiral entirely. The upcoming movie ( Sword of the Wizard King ) is also canon-adjacent, written by Tabata himself, which is a level of author involvement most filler never gets. For completionists: Yes. The filler arcs are short (6 episodes total). You will lose nothing but a few hours. The training episodes offer minor character bonding that the manga skips. how much filler does black clover have
Similarly, the anime expands the "Royal Knights Arc" with a prolonged training camp (Episodes 80-84) that teeters on the edge of filler. While some character moments (Luck vs. Magna) are good, the obstacle course feels like busy work. Here is where Black Clover outsmarts the traditional filler model. Unlike Naruto ’s "Ostrich Ninja" episodes (which are entirely non-canon and never referenced again), Black Clover uses expansion. The short answer is: But the long answer
Skip Episodes 29, 66, 80-84, and 143-148. You will miss exactly zero plot points. The show even recaps the relevant info when you return to canon. For completionists: Yes
It has filler. All long shows do. But at 13%, with no 20-episode detours, and with a studio that prioritized the manga’s ending over its own paycheck, Black Clover stands as a testament to how the genre should be adapted.
While not "filler" in the plot sense, these structural repetitions make the first 30 episodes feel like they are 51% recycled content. Viewers conflate "slow pacing" with "filler." Once the show hits the Seabed Temple arc (Episode 40), this problem vanishes, but the damage to the show's reputation was already done. The most brilliant decision Black Clover made was ending the anime.
The problem was never the filler. The problem was the recaps. Once you skip the first 30 seconds of every early episode and ignore the beach volleyball match, Black Clover is one of the leanest, meanest battle shonen ever put to screen.