Zaffiro Nightingale is the Duke of the Northern part of the empire that protects it from ferocious beasts. Born out of wedlock from the ducal house, his existence was one with completely unsatisfactory tale. Given the fact that he had a very uncertain history of countless bloodshed that caused him to take his patrons' lives in order to inherit the Dukedom; it began to feel even more morbid due to the forced marriage with the empires unwanted princess. Much to his dismay, the woman wasn't someone that he fancied, therefore giving him the reason to refuse to give her anything other than his loyalty.