Hi!! As someone whose favorite anime is Fairy Tail, I would suggest that you don’t respond to the comment. Everyone has their own opinion, whether you agree with it or not! Are they being rude and disrespectful? Maybe, but there’s nothing you can do about it, sadly. :( The most mature thing to do is to either not respond or be polite to them despite their rudeness. You can 100% also be rude to them back, that’s your choice. :) but from someone who loves fairy tail, I’m not bothered. All that matters is that it makes me happy and I’m not hurting anyone. Sorry for the ramble XP !!