I like this very much so far - the plot is original and interesting, your grammar is impeccable, and I like the way you have developed your characters. Quaith (where did you come up with that, anyway? It's very unusual) is strong and likeable, but isn't obnoxiously perfect, which is even better.

I also like Daiaan, and the demon part at the end of this chapter - it was an interesting twist.

I would only like to point out that this is very fast-paced and rushed, and it's hard to keep up with. It's like you tried to get everything down in this chapter, and it's hard to believe that a marriage proposal between monarchs would be so casual or quick to take place.

Regardless of that, this story is extremely promising. It caught and held my attention, so keep the chapters coming.

Beautiful.
Keep on going.

You've got a few typos here and there, but you might already know that.
I feel like this is going to be something very good. Keep moving forward and don't loose trust in whatever you're writing.

Well, I mean, we don't know the characters nor really the relationship, but much can be grasped. I felt it was really well done in the way as readers weren't confused, but didn't give too much away for the first chapter. I like the style and story so far, I'll keep watching,