This was my first Carissa Broadbent book and I can tell you for a fact it will not be my last. This is technically the third in the Crowns of Nyaxia series but first in its own duology. So no need to have read the first two books to start this one, it follows what I believe is a side character in the first two books, and all of the important history and context is revealed throughout the book. At no point did I feel like I was missing any context by not having read the other books. TLDR; you can start with this book and be fine.