User blog comment:FairyRaven/Fairy Tail Chapter 390: The Story of a Boy, Review and Commentary/@comment-5303512-20140627173106

I gotta say, with Deliora possessing Silver, that makes my theory about E.N.D. more plossiple.

As for Gray at the end of the chapter, I think Gray has officially lost it. That is not the typical "you hurt my Nakama, prepare to die" anger. It seems to be the "Absolute Hatred" anger that is similar to Sasuke's, knowing that his master died in vain, is "Darkness" has returned. At this moment, it is possible that he'll try Iced Shell.