This series is everything. The world / magic system is super interesting, the characters and their development and relationships are incredibly well written, the plot is very intriguing and the ending is perfect.
And don't even get me started on the slow burn romance. Especially the one that mainly happens in this book (if you've read it, you know exactly who I'm talking about). I haven't been this invested in a fictional relationship since my 2013 NCIS phase and that really says something lmao.