Obsidian Crown - Louisa Gene Moriyama - Bog

Evie has always lived in a world of secrets. A world in which she has kept her power to heal hidden, even from herself.
But now she is ready to accept who she is and what she is capable of-including the ability to survive death.

This remarkable gift of Evie's has drawn the attention of Cerin and his twin siblings, Auriel and Neko, for they are the children of the Obsidian King, the shadow of death himself, a tyrant who has ruled over the worlds outside of Earth for millennia.
With the help of the Obsidian King's most powerful son, Cerin, Evie discovers that she is descended from the greatest enemy of the Obsidian King-Kana, the Queen of Crescents. Kana lived in a time and world thousands of years ago, the very memory of her people and greatest allies barely a whisper of dust in the pages of history.

The Obsidian King won the war that destroyed the Queen of Crescents and her people. It is Cerin's wish to start a new war. A war to end his father's reign-and he wants Evie to lead it.