The main characters are in a bubble. Something trickles into it, they play with whatever little they get, and then it's vacuum and the two of them again.
I don't mind the boys being together all the time, but secondary characters? None of the people in this book qualify as such, even Ka'an.
Speaking of characters, I liked Ka'an the best. He makes for a good anti-hero, poor abandoned soul that he is, and... Total Bad-ass! :D Wish that part of him was explored more.