After a war between humans and the vampiric demons, an agreement was made by the king. Rather than hunting the innocents as they sat in their villages, they would help the humans by swearing to only devour their criminals from prisons. In turn, the humans had permission to slay any mad or oath-breaking demon they found. Cut to two hundred years later, where a friendly group of performing demons at the White Cherry Lounge put on shows for humans by day, and run a blood market safe from the public eye for their kind by night.