The Tale of the Outcasts, Volume 2 (The Tale of the Outcasts #8-17)

Marbas, a powerful demon, and Wisteria, a young human girl, are on a journey to find their place in the world. They part with Wisteria's brother, the demon hunter, and encounter a young lady bound to another of Marbas' kind. This is the tale of the eternal nights in which such meetings and partings ease the loneliness of this uncanny pair.