Wells certainly has a penchant for emotionally aloof and antisocially prone main characters, but I'm all for it. In a world devoid of humans and populated by a slew of humanoid creatures, the story offers a setting completely alien to the reader, which leaves a lot up to the imagination. At first, it was somewhat difficult for me to properly visualize all the differences between the species. The book already has an appendix for how to differentiate between the Raksura and the Fell, so it would have been helpful to have another that focused on the other races in the world. 

I don't know if this is just me, but I thought that it was somewhat odd that, despite possibly coming from a similar ancestor, the Raksura are an all sentient, rational thinking race among all their classes, but the Fell are a mostly animalistic hivemind species aside from their rulers. It kind of made for a messy parallel and I think was to make the reader empathize more with the Raksura and showcase the Fell as entirely evil with no capability for civility. I suppose it certainly helps side with the heroes as the two constantly slaughter each other, but it makes for a pretty boring antagonist that is simply evil scary monsters just because. The story seemed like it had a few opportunities to go deeper than that, as Cloud has a history with them and Wells has shown that she is capable of more nuanced storytelling, but fell off about halfway through.

I wish there had been more time set aside for Cloud to truly learn about his people and reflect on his place in their society before they thrust him into the hierarchal issues and the disputes with the Fell. Cloud has only just found his people for the first time after losing his mother and siblings as a child, wandering alone and hiding what he is from others, and I don't think we get a lot of him reflecting on what that truly means. Also, imagine going through all that, and discovering that your main purpose in that society was basically to breed. Again, may just be a personal thing, but I know that would certainly lead to an existential dilemma for me. Personally, I'm not a fan of society structures as, "you're born as this class, so obviously you must serve that role forever" seems too dystopic for my tastes. Wells subverts this with Chime in a way, but again, doesn't really tap the full ramifications or intrigue behind it. 

I'm on the fence on whether to continue this series. There were several points where it dragged, leading my eyes to glaze over and hope that it would pick up again. If I find other readers of the series that give a compelling argument to continue, then I would consider it.