The Clover Kingdom’s finest could never have been truly prepared for how Asta would disrupt the status quo in Black Clover, as the boy unloved by magic makes waves among the Magic Knights. By sheer grit and his acquisition of the Five-Leaf Clover Grimoire, Asta could suddenly disrupt any threat in a society built upon and largely sustained by magic. This, combined with Black Clover being a battle shnen anime and manga series, allows Asta to present a fascinating take on the Stock Shnen Rival trope.

https://screenrant.com/black-clover-asta-shonen-hero-rival-trope-op-ed/