> The challenger bet that Butcher could not write a good story based on a lame idea, and he countered that he could do it using two lame ideas of the challenger's choosing. The "lame" ideas given were "Lost Roman Legion", and "Pokémon"
Outside of the protagonist, I had some trouble with the series's use of antagonists who are so incredibly comically evil, probably to make Naofumi's morally grey decisions look lawful good by comparison.
I stopped reading Akame ga Kill for similar reasons. That series was so grimdark and the antagonists were so beyond the pale that it was emotionally exhausting to get/stay invested in the story.