S. Usher Evans

The evil has been unleashed But the hallowed are waiting  Ophesia has finally escaped her confinement, placing herself on the throne of Genad and holding Prince Thom prisoner. But her plans go beyond just ruling a kingdom, potentially unleashing an ancient magic that will consume the entire world in shadow. Meanwhile, Ella has unanswered questions about her past and the mysterious white magic she possesses.
With Thom's best friend Jaime, they travel to the end of the known world to find answers, only to discover the war between shadow and light has been brewing for centuries, and her own attempts have only delayed the inevitable. The Wrath of the Hallowed is the final book in the Wretched Curse duology, a spicy, genderswapped Beauty and the Beast retelling with shadow magic.