Beneath the Mists - Bonnie L Price - Bog

Their world is broken and so are they.
Arianna is an outcast. Her affinity for darkness terrifies those around her. Haunted by dreams of another time, she doubts if she even belongs among her people. Rather than dwell on fragments of a forgotten past, she dedicates herself to protecting her twin brother and their people from the monsters beyond the city walls.
The God of Balance, Nalithor, was born a Devillian prince. Twisted monstrosities and unhinged deities are a threat to the world's mortals. His duty is to restore order, yet his superiors block every move he makes.
In order to salvage their world, Arianna and Nalithor must overcome their foes. However, they must put themselves back together first…or Avrirsa will fall.