Ok, I'm just gonna say this first; the story of this book is great, but the grammar is not really the best, which can lead to confusion. Some words are misspelled or misplaced, and the point of view switches from first to third person every now and then, which can lead to confusion.
If you get past that, the overall story and world development are really good, but I wish the first arc was a little longer. I think it would've been nice if some hero sealed her up so you could see the demise from the antagonists point of view, but the end of the first arc was still satisfying. The second arc is also really good, in my opinion, but in this arc, the grammar worsens. Overall, it's a really good story, but the typos need fixing.