Wow, this is pretty good. It reminds me of The Giver, only without the utopia aspect. I also find it reminiscent of Orson Scott Card's sci-fi. Very nice, keep it up!
Nice plot I can see it coming together already.As for the Names I think...
Tray could be Jake
Karis could be Jane .. (I cant think very well)
I cant think at all right now... hope I helped a little at least