Dang, did not expect to enjoy this so much. It's pretty simple, but not in a bad way. The straight-forwardness of the situation means we can care more for these pretty complex characters. Even some of the nobles, who could easily be mistaken for irreparable baddies, have enough depth to make them interesting and understandable.
In fact, the only weakness so far seems to be that the nature of the Shadow World means it's not very compelling. It's all basically a simulation (at least at present), so I'm finding myself much more concerned about what's going on in Havrion Academy than visiting the Shadow Worlds. That's not really a good choice considering the Shadow World is supposed to be the main event.