Oh I love it just like the others said when I read the end I was like nooo then I saw the little this is a prequel of.... I was like Hell To THE YES! Haha I really liked this first chapter write more please ill give you a cookie :)
Layout: Gorgeous! I love it, its so simple and sweet its brilliant.
Summary: It's really good, makes me think... which is a really good thing! :D
Story: I have never seen Supernatural, I'm guessing that is what this story is about since you mentioned it in the sumary. But all in all its a brilliant start, the description is perfect the characters are great! Though I don't understand why there are two && near the end of the story... but if you meant to do that then it looked pretty cool. Maybe centre them if you can. :-)
I'll first say that I'm going into reading this having not read the prequel or having ever watched Supernatural - I know a little about it but not much!
But I will say that I got a real sense of the characters you were talking about. You introduced and wrote them very realistically and from the way they acted, I felt like I understood them already.
The exposition is very interesting, and I felt like it gave a great insight into what had led up to this moment that I, as a reader, am experiencing for the first time, and showed loads about the situation they're in.