I'm really starting to like the thematic direction atlus (and its studios?) are going in; I mean the "feel" to each game, like persona 4 was a murder mystery in a small town (and it FELT like a small town, not a mock-up).
This one is looking like it may very well be based on the isolation one can feel living alone in a large city, especially after school. Sure, you have your job, and work friends, but in the end you go home and the city is still just a big gray sea.
But that's just my take on the few scenes that aren't nightmarish.