User blog comment:Miskos3/Fairy Tail Chapter 334: Sin and Sacrifice, Review/@comment-26399354-20130607182602/@comment-5840892-20130607183506

The Arc of Time can't be used on people. Not in that sense, you can use it to awaken Second Origin in a person, but; you can't use it on a living being to travel back in time and prevent their death.

I'm sorry but, unless he gets some serious medical treatment immediatly, Grey's gone. (Meredy could do something to save him, with her magic I think it's only a theory though; but it would kill her.)

There, there. *pats him/her on the back*