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.
The "aura battle" between the two captains provided a chilling demonstration of high-level mana, a trope reviewers felt was executed perfectly to show the power gap between Asta and the top-tier knights. Black Clover (TV) (Dub) Episode 21
Fans on Reddit celebrated the significantly reduced recap time (only 30 seconds), noting that the episode flowed much better than earlier installments. Key Episode Elements Fans on Reddit celebrated the significantly reduced recap
Even in a serious episode, the "Petite Clover" segment—specifically Mimosa's "best girl" moment—remained a fan-favorite for adding much-needed levity. Black Clover (TV) (Dub) Episode 21
Check out these community reactions and breakdowns to see why this episode is considered a major turning point: