City of Dark Creatures

Eden had done the impossible--defeat Sakarabru and save the world from complete annihilation. Yet the demise of the great demon was not enough. With his Brood army still on the loose and a powerful replacement ready to step in, the world is in greater danger than ever before.
But not all enemies are outsiders. As Eden’s newfound, barely-controlled powers boil inside her, one Ancient will take on the task of keeping Eden in check. And in this apocryphal battle for the ages, it’s either kill or be killed…