This might have read a little better if the synopsis had been about more than the last quarter of the book.
A chunk of the problem is how very very slowly it starts. We get an absolutely massive amount of backstory that was somehow not terribly interesting since we as yet had no real stake in the universe. In practice, the plot of the story picks up somewhere between two-thirds and three-quarters of the way through the book, and that just felt way too late to really redeem things.
Rhuun is a bit woe-is-me and given how much time I spent growing up with him I really feel I ought to have been more invested. The other characters never really made much of an impact on me. Most of them were vaguely annoying, but in that disconnected way you get when characters don't have enough "character" to even anger you.
In the end, I felt like the first several hundred pages were set-up for the ending (which was admittedly solid) and the next book. I do like slow-burn stories, but I need to be more interested and more connected on my way to the main plot. This dragged badly and was rather dry to boot, and although it picked up in speed and intrigue towards the end, I doubt I'll be picking up the next in the series.
This book was provided to me for free via NetGalley in exchange for an honest review.