User blog comment:FairyRaven/Fairy Tail vs. Alvarez Empire! Place your bets!/@comment-74.43.51.229-20150917190949/@comment-153.91.238.254-20150917234243

I understand your arguments but the only similarity natsu and acnologia had was the hair when natsu came back from the timeskip and his hair was much longer. The acnologia being natsu theory while it may be somewhat absurd and ridiculous(again not trying to come off as a douche) I do think that acnologia could perhaps be Natsus father or something.