My book finally came! I suspended my book fast (it was a pre-arranged exemption) and read nearly the whole thing yesterday. I finished the last 10 pages or so this morning. It is great. I loved the whole series and am planning on reading other books by the same author.
This story starts three years after the ending of the third book and has a different main character. I really liked Aya and the other characters, and once again recommend the books.