You play as an arbiter, and your job is to bring THE LAW at sword-point and pistol to all the anarchist savages who believe they know better than you how things should run around here. There's also magic to wield and demons who must die because they don't contribute with taxes to this great society.
I like the premise, besides that it's Final Fantasy Tactics with better balance, but worse art design. You can also recruit a bug. Very good.