White Feathers
1812
A world populated both by humans and those thought to be the descendants of angels and demons, who possess mystical powers.
As well as humans, wary of the easy power these Heavenborn possess, the bloodlines are often in conflict and those of mixed blood often find themselves caught between sides.
In the English Regency era, a time characterised as much by it's secret excesses as it's insistence on reputation and gossip, the Heavenborn are much freer and so find themselves shunned in polite society and isolated from humans. Many humans will join them by night and deny everything in the day so they begin to draw away or move among humans in disguise.