My initial impression - which didn't change for the entirety of the book - was "OMG, /so anime/." If anyone ever tells me they want a book that reads like you're watching an episode of Dragonball Z, now I'll know where to point them. It wore me down to the point where my final comments were just "This is /so dumb/." I mean, they're setting off on a *political* quest?! They're debating *magical climate change*?! They're on a floating continent! Sure! Why not. And everybody can hear each other with perfect clarity across giant battlefields, regardless of the hundreds dying around them.
Generally, you'd expect the boss battle to come at the end, but this has them throughout the book. You can't go more than a couple of pages without a fight of some kind, or at least an offhand mention of a bunch of monsters being dispatched with no effort. There's an alarming amount of just...shrugging off death in this story, some of it literal, and none of it very realistic. Killing is hard, both physically and emotionally!
Overall, this book is dense, but not meaty; there's a lot of filler text that's not really saying anything. The balance of "show" vs "tell" seems subtly off; there'll be pages of mostly dialogue followed by two lines that take up the rest of the day. Possibly related is the character's tendency to lose and gain horses at random: are they walking everywhere? Why aren't they riding instead, to save time if nothing else? Oh, they were riding horses after all, you just called it "walking" for some reason?
I can only imagine that the mysterious man from the world below will come into play in a later book, as he's conveniently ignored for most of this one. You'd think a week's worth of time in a foreign culture would be enough to learn at least basic greetings. Probably by the time the plot needs him again, he'll resurface with full command of the language.
It struck me at several points that these characters aren't human. At most, two of them make that claim, but the way they all fight, especially with impractical weapons and bad tactics, and then just ignore massive injuries, sort of raises the question across the board. Sure, these are your best fighters! (Even though your High Knight spent the last three years in a depressive funk and nobody either a)helped him or b)fired and replaced him.) But people can't do those things. Ultimately, if I wanted anime, I'd watch anime.