Well, here we have the classic fantasy novel with homo-eroticism built on top.
Great work Lugh, I have great respect for authors who can build a whole working reality, and that's what you've done.
I especially liked your character 'Shadow' with his 'otherly' aspects. (I would have liked to see more detail and development of 'Shadow').
I agree with Cia. - This is a complete story on it's own with the development, meeting, and epic confrontation with the bad guys, of the central characters.
BUT - there are so many options, threads and possibilities built in that I look on this as a PREQUEL. - hint -hint- hint.
Hmm! - there were a few minor editting issues and sometimes the scenes cut in and out a bit too frequently for my old fashioned likes.
As I've HINTED above, there is so much background development crying out for a full treatment in a novel length story, and with your evocative writing style you should 'go for it'.
Iarwain