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.

Reviewers at Anime News Network and Reddit praised Fuegoleon and Leopold Vermillion. Unlike the haughty Silva family, the Vermillions’ willingness to recognize Asta’s merit—culminating in Leopold declaring Asta his rival—was a highlight.

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.

Even in a serious episode, the "Petite Clover" segment—specifically Mimosa's "best girl" moment—remained a fan-favorite for adding much-needed levity.