An amazing prologue. I love the characterizations of Devil, God and Fate in particular. I also love the scene in Limbo, it seemed very fitting. Great job!
This is a fascinating premise for a Harry Potter story and you've done an excellent job of weaving a unique tale of fantasy. I don't like to read about suicide, but taken in the context of the story, and as long as it's in the adult category, the expansion of the plot over-rides my discomfort. Very well-written. Gaia