Several reaction-based reviews expressed surprise at the sudden "zombie apocalypse" vibe. The transition from a tense royal banquet to a full-scale siege on the capital by undead hordes was seen as a great way to escalate the tension.
Even in a serious episode, the "Petite Clover" segment—specifically Mimosa's "best girl" moment—remained a fan-favorite for adding much-needed levity.
Episode 21, " Capital Riot ," is widely regarded by fans and reviewers as the moment Black Clover truly finds its footing, shifting from character introductions to high-stakes action.
Many viewers who previously found Asta's shouting annoying noted that this episode marked a turning point. Seeing him stand up to the elitist noble captains and shut down Solid Silva's magic with his anti-magic sword earned him significant respect from the community.