User blog comment:Miskos3/Fairy Tail 520: Dragon or Demon, Review/@comment-5303512-20170204123939/@comment-5303512-20170204145248

Because that seed is using Igneel's words END, the fact that there is something at all that defines END's existence outside of just Natsu Dragneel himself would show that there is no correlation to them being the same person. This actually retcons the entire point of Natsu being END and that if Zeref dies, Natsu dies too. Do you see what I mean? The only explanation for that moment was Zeref wanting to induce despair into Natsu. And we also have to come to understand that there is truth with Zeref saying during Tartaros arc.

And what has been going on, you guys are coming to me first, I am just giving valid points.