A Conjuring of Light
A book by V.E. Schwab
What a great series! The whole universe was incredibly captivating and left me wanting to learn and explore more of it. The main characters were well developed and the author makes you care for them deeply. I say this also regarding one of the villains we meet at the beginning of the series, you end up learning more about why they are the way they are and end up wanting to dig deeper, until the end.