I suggest "Reflections” by Kaze Woods. It is a supernatural story mixing fiction with non-fiction while injecting elements of magical realism. Can only get it online at amazon.com for 14.99 or barnesandnoble.com for 17.99. 320 pages. Trade paperback format. Here is what the back of the book says:
What if you where a 19 year old Detroit teenager that suffers from nightmares linking you to another you from another reality? How would you react if a demon that visits human dreams proposed to merge its essence with you, effectively making two beings one? Would you accept the reality that that is placed before you… or, like a typical human, reject it all as pure nonsense?
Kris F. Gemini is such a person. Philosophical and blunt, he is a troubled individual to begin with. His lack of trust and shunning of others have turned him into a lonely young man who’s mind is filled with dissolving negativity for the world around him.
His outlook on life in general slowly changes when a twenty-one thousand year old demon enters his life. In exchange for being allowed to experience his world through his eyes, the demon allows him to change into a side of himself that physically represents the negative feelings that he has experienced, effectively turning him into a brutal killer… but that is secondary.
The process of the main character coming to terms with himself and those around him is more important than what he can do in his “other” state. The conflicts fought in this story are more on a personal level. The true motive that lies behind why the demon has decided to merge with him is deeper than he believes… and it has nothing to do with taking his “soul” or deciding the fate of his world.
Here’s a link to a review:
http://search.barnesandnoble.com/booksearch/isbnInquiry.asp?z=y&EAN=9780979069192&tabname=custreview&itm=1