User blog comment:Wrath022/Chapter 516: The Truth About Enchantment, Review/@comment-5303512-20161227040743/@comment-1776824-20161227050936

No shit. But there is no END personality. The tumor/demon seed is merely Natsu's existence as an Etherious. It is the source of what makes him END, or in other words, it is proof that he was reborn as a demon. The point of the seed is, apparently, that it wants to grow and transform Natsu into a complete inhuman form. However, the dragon seed, which is what would have turned Natsu into a dragon instead of a demon, is at odds with it. The struggle between the two seeds within him is what is killing Natsu. There are no other personalities. The seeds are quite literally just power sources.

Also, the entire chapter, again, is full of asspulls and bullshit, just like half this arc. You just keep thinking that brown is gold.