User blog comment:Miskos3/Fairy Tail 520: Dragon or Demon, Review/@comment-4933386-20170205092919/@comment-4933386-20170206010702

So how does he still have fire magic, whether its not dragon slaying or not...

Because if the seed what makes you turn into a dragon, learning DS magic means you have to have the seed in you doesn't it? As far as I know... its what Irene has in the first place, learning DS magic result in her seed growing into dragonification.