User blog comment:B214/Chapter 504: Rift/@comment-4507125-20161005175154/@comment-7418318-20161005175753

Eh?

That makes no sense... why would wanting to actually kill him mean that he sees him as a Fairy Tail member rather than END? It's the exact other way round... or rather Gray just sees END and that's where his brain-capacity ends. Fairy Tail, almost life-long friendship, having saved each other's lives or Natsu being about to kill Zeref - the real source of Gray's sorrows and the bane of the entire Human race - ... that's all of no concern to current Gray.