So, I have a sneaking suspicion that Titus isn't a real person and is some kind of magical construct created by Shaharazad. What with him seeming to have no experience of seemingly normal things, and the way she said this mission is the reason for his existence.
As far as I can tell, the Ruhk are the butterflies that represent, like, people's spirits or something like that.
Magoi is mana.
Rukh seem to be made of Magoi, or they carry it at least.
You say that, but there are countless people that would kill to be in a situation like that.
Free food and water, and all they have to do is live underground? The real world is full of places where living is way worse than that.