Title: An Ember in the Ashes
Author: Sabaa Tahir
It's sort of Rome but not really. The Martial Empire serves the Emperor, and anyone who defies them is put to death. Sort of how America will be two years from now.
Laia is a slave at the military academy, Elias is a soldier. They both secretly hate the Emperor's guts, and Laia is actually a spy.
Elias spends a lot of time being all "Oh no existential crisis, feeling so trapped in my role of power." Meanwhile, Laia is sneaking around reading secret documents and plotting a resistance. Elias catches up eventually, and then shit gets real.
You should buy it.
4/5 Brass Knuckles
Full disclosure: I bought it with my own dollars.