World where demons are real and around and ontologically evil
but with an extremely Christian-fundamentalist definition of
"evil". They don't care what sins they facilitate as long as
they're sins. Murder is just bad economics: you're getting
someone killed who would do sins of their own. Even labor
exploitation isn't great, because ideally everyone has free
time for the real big-ticket sins like lust and sloth and
gluttony.
So of course a bunch of demons end up working as
pornographers, musicians, chefs, and so on. But it's also rare
to see a queer youth center without at least a few demon
volunteers absolutely dead set on helping everyone accept
themselves. There are even a few who really play the long game
doing labor organizing and base-building so that one day
humans will be free from the shackles of capitalism and the
sins of idleness will really start rolling in.
Angels exist in this setting too but they're such dour
killjoys that barely any humans will tolerate spending time
with them and they mostly just live off in their own towns in
the middle of otherwise deserted areas.