The Devil is a Handsome Man Wiki:Centralia

Overview
It is stated that the world is not an afterlife, but an entirely new place with flora, fauna, and demons of all shapes and sizes. The city of Centralia is home to the largest population, spanning much of the continent.

Demons
Demons are stated as having a lifespan around one-thousand years, and range significantly in terms of abilities and physical properties. Demons who have pure blood (ie blood from only their species/race, not mixed) have greater physical strength and maybe even special powers and abilities.

Centralia Centre
is the main operations of the city of Centralia. It functions as a government building as well as free enterprise. The building seems to reach into the skies with no end.

The Top Floor
Demons who work their way up the corporate hierarchy of Centralia Centre have the opportunity to make a deal with the devil in exchange for their work. This chance seems to be available to only select individuals who have proven their worth.

Social Issues/Status
Because of the many differences of existing demons, social issues seem to be non-existent. However, the potential that comes from making a contract with the devil is revered by all.