Also by John C. Wright. I read this last night, and it is the second of two books that were probably split up in the same way as The Orphans of Chaos. As of this review I have not read the first book (The Last Guardian of Everness.)
This is more fantasy (seeing a theme yet?). I didn't think it was nearly as good as The Orphans of Chaos. The first chapter opened very well, but afterwards a lot of what happens seems to be disconnected and somewhat causeless. Characters appear out of nowhere to go places with no explanation for where they were or why they're going where they are. Also, in this book, the number of allusions to mythology are almost overwhelming, especially since they lack good explanations for people who are unfamiliar with them. Possibly they were explained in the first book.
Anyways: not so recommended. It might have made a lot more sense if I had read The Last Guardian of Everness first, though, so YMMV.