User blog comment:Wrath022/Chapter 516: The Truth About Enchantment, Review/@comment-5303512-20161227040743/@comment-1776824-20161228052833

CNBA, I couldn't give the first shake of a rabbit's arse about whether or not you liked the chapter. It's just that you are convinced Natsu has a dissociative alter named END, when all that has happened was his Etherious instincts were awakened. If this other "personality" had been awakened, and END was a totally different being, he would have had no clue who Gray, or anyone, was (especially Lucy of all people), because, as explained, these instincts were dormant. This means asleep. As in, if this was a different person, END, being asleep, would have no knowledge of anything relating to Natsu's life. What I don't appreciate is your bullheaded stubbornness regarding the misguided support of a now completely debunked series myth by misrepresenting old facts that have since been disproved as well.

Tl;dr: If END was a separate personality, who had been dormant for many years now, he would not have known Erza, Gray, Lucy, or anyone. Instead, all that has happened was Natsu's instinct to kill Zeref has been awoken. That's it.