Didn't like this whole changmuro station arc much when I read the novel a while back. Been over a year tho so I could be remembering wrong. I didn't get too much past this in the novel either.
I think that shithead with the turret ability doesn't get killed off because a constellation/god had its eyes on him or something. That, and I think this arc insinuated or introduced prostitution for coins, I think. I mean I get it given the state of the world but eh, just didn't sit well with me.