Red Sister (Book of the Ancestor #1) by Mark Lawrence (2017)
In this world there are special bloodlines, and Nona is hunska, which means that she is extremely fast. Gerants are giants, including the man she tried to kill. Quantals and marjals are able to tap into various types of magic. At Sweet Mercy, Nona learns of a prophecy about a Chosen One with multiple of these bloodlines, and a Shield who is destined to protect the Chosen One.
This all takes place in what appears to be an extended ice age, only a small part of the world habitable. Past civilizations have been lost, but people have manipulated the sun (and/or moon? the details are fuzzy to me now) so it focuses and keeps the Corridor open and habitable. But the sun is dying so they know they don't have a ton of time left. It's a desperate time, many people are starving, and Nona is grateful for the luxuries she finds at Sweet Mercy: a soft bed, hot water, plenty of food at every meal.
At some point, each girl will decide on her focus: Red Sisters are fighters; Grey specialize in espionage, stealth, and poisons; Holy Sisters focus on the faith; and Mystic Witches are those gifted in magic. Each year of training focuses on one of these areas, and during this book Nona is in the Red Class where they learn fighting. There are three books in the series, but I don't know if it's complete.
I found the setting and story pretty fascinating. I'm always drawn to books set in cold climates, and I like stories about someone being taken from their crappy life and set off to train in a special school. It suddenly sounds a lot like Harry Potter, now that I describe it that way! I admired all the young women in this story for their strength, bravery, and loyalty to each other. It wasn't the easiest book to get through, taking me close to two weeks. I don't know if that's just because of how my life was in those two weeks, or if it's actually because of the book. It's fairly dense and doesn't move super fast, but I have no real criticisms about it. The world-building and plot were compelling, and there were passages I re-read because of the beauty and cleverness of the writing. Part of me does want to continue this series so I can find out what happens and learn more about this world, but right now I just need to read some shorter, easier books for a bit.
Red Sister was the final book for my 2019 TBR Pile Challenge.