Probably the Fairy Tail fandom (not everyone, just the vocal minority). For some reason these Fairy Tail fans keep going to peoples favorite anime lists and start ranting about how Fairy Tail isn't on there but an anime they haven't even heard of is and how that anime is terrible. I'm totally fine if you disagree with someone's favorites, but at least do some research before you claim that it is terrible.

Also I honestly don't care about MHA, but whats the name that everyone is overreacting about?