On the other hand: matociquala dedicated this particular book to me, and not some other book, for a reason, and that reason is that this is my sort of thing in spades. The emotional tone of the book goes from the smoky half-dark of the mead hall to the headache-bright of fresh noon snow and back again. It's a post-Ragnarok book that really runs with the post-ness, even if you can't see how quite as clearly at the beginning as you can in the beginning of All the Windwracked Stars. I love all the POV characters, and I love Rannveig the little mortal girl who just keeps on, and I love Yrenbend, because I am all about secondary character love. And it has Gullveig the Deathless, who is one of the best side bits of Norse myth, one of the best bits where your mouth sort of opens and closes and then you end up saying, "Yah, okay," because there's not a lot else to say in the face of Gullveig the Deathless. Also I love how Rannveig's dog is a dog and the wolves are wolves and they are not the same. Important. But not the same.
The Norse worldview stuff all comes out just right here.
Oh, and it's a prequel. So you can read it now, or you can read it after All the Windwracked Stars, and it'll be different in those configurations, but I think it'll work either way. I'm trying to avoid spoilers anyway (um, world not the same after Ragnarok: ideally not a spoiler for very many people), but you will have partial knowledge of one if you read both, and that's okay, it's built to work.
Bookday for this book is tomorrow. Go, buy, devour as you would devour the Sun, were you the sort of character who went around devouring the Sun. Which, y'know. Some of you will probably find you are.