It's a fantasy novel, but it's not about elves and magical races of creatures, or world building, or the complexities of politics and power struggles. What it's really about is wandering through emotional darkness while coming to terms with grief. It's about how people try to make sense of their place in the world and in the universe during times of tragedy and hardship. That's what it's really about. It does, however, have magic and monsters and turgid emotions and pitched battles and chases and lots of good stuff.