[I've been
This Is How You Lose the Time War

I put off reading this for a while because I think I was concerned it might have been too experimental for me. It was not! It’s an epistolary novel, told by two nameless (I think?) warriors in some future time where time travel, both backwards and forwards, is just how things work. Two opponents find they have a lot in common. Huh! My favorite thing about this is how you see the characters subtly change, not just the obvious ways but some of the smaller simpler ways. Clearly a masterpiece of work doing this, I was sad when it was over.