'Offerers'

What makes you so sure that the one in manacles isn't your own soul?

Offerers - non-ageing, ghostly beings that form after a persons cruel death. Their bodies resemble their past selves, and the only way to damage their bodies is using passion. Their goal is to keep a balance of lies and truth in the "real" world. One of the accepted methods of doing so - getting rid of "corrupted" souls.

IDS (Interverital Designatus Society) is the place of residence for the beings known as Offerers. Those who are not aware of its existence will never be able to see, touch or set foot in it. Living beings with whom the IDS has a pact with (Taskers) can only enter with a special grant. Overall, the place is almost undescribable - reminding of a neverending hotel that still makes you feel that there's a visible sky above your head.

The Months -  IDS residents who are considered to be the most powerful and in charge of most operations. Each Tasker is designated to work under one of these Months - the weakest being December, and the strongest - January.