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.

Now, if only Pierrot would animate the final arc...

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.

The most notorious is This is a beach episode. In the middle of the underwater temple siege. Characters are literally drowning three episodes later, but here we are playing volleyball.

At Episode 170, the manga began a six-month time-skip. Rather than invent 20 episodes of nonsense (looking at you, Bleach’s Bount Arc ), Studio Pierrot simply... stopped. They ended the anime on a canon cliffhanger (Liebe in the grimoire) and moved on.