In my opinion, Black Clover is a fairly overrated anime which has major issues in many different aspects of its production. Having watched it until it's completion it was a huge disappointment for me, considering that the original idea sounded intriguing. I've also heard the manga is much better (though at the time of writing I've not read it), so I'm rather miffed that they studio put this low a quality into what probably was a fairly decent series.