The Midnight Star by Marie Lu
If you haven't read The Young Elites & The Rose Society, this review may contain spoilers.
Is being Queen worth losing everything and everyone you ever loved?
Adelina supposedly now has everything she wanted. She is Queen and she's as ruthless and as cruel as ever. Even though she is now queen, she can never have enough power. Her darkness feeds on the power and it's taking over. Adelina has lost so much, but now it seems the whole world is at risk. Her Rose Society must join with the Daggers and make an unforgettable journey to the realm of the gods. If they can't work together, there is no hope.
This was an amazing series and Marie Lu is an impressive and talented writer. I also loved the Legend series. Adelina's journey is heartbreaking and difficult, but I wouldn't have missed it for the world.