Nao

A retainer for Lady Izunome.. who at one point or another was a human, until some sort of hex was placed upon him, turning him into what many believed to be a demon-cat. 

Izunome's manor is the only safe haven Nao believed he had.. until a strange woman from the land of sands appeared, and Izunome spent every waking moment with her..

One day, Lady Izunome vanished, as did everyone else.. But Nao remained, and found he was unable to leave, for Lady Izunome had placed her curse upon his shoulders, leaving him in isolation.

It was.. an ancient time in the past, one would say. Leadership in Shadouin changes so rarely that King Yui still drops by to visit.