User blog comment:IamJakuhoRaikoben/Chapter 366: 1000 Souls, Review./@comment-5303512-20140109175213/@comment-7418318-20140110090445


 * 1) Who said that the Eclipse Gate is the only way in all the Fairy Tail worlds to travel through time? Or that there is only this one Eclipse Gate?
 * 2) Gray may have assumed that his father died, without actually seeing it. Or maybe Gray was raised by the husband of his mother, which isn't necessarily his biologial father.
 * 3) Maybe he's just so used to Gildarts' and Cana's scents that he never noticed, or their scent might be different due to them having different genders. Gray and Silver are both males.
 * 4) Funny you'd say this, considering how you dismissed #1.

I still think this whole "Gray's manifested darkness" is extremely unlikely. As B214 pointed out a partial re-incarnation of Deliora is more likely... or rather less unlikely.