User blog comment:Miskos3/Fairy Tail 514: Dragon Seed, Review/@comment-4933386-20161213032134/@comment-1776824-20161214171001

It couldn't be Irene, because if it was, Acnologia would have 'smelled dragon' on her the moment he saw her. I think it's being read into far too much. I mean, in this chapter, after Irene says she invented dragon slaying magic, we got panels of the last 7 dragon slayers. Being 'true' or not doesn't matter. Acnologia is trying to wipe out all cases of dragon slaying magic and therefore rid the world of dragons once he dies.