Shadowed By Despair by Candace Robinson

Sometimes the land chooses for you…

Perin expected eternal darkness after his death, yet the land of Laith has other plans for him. Snapped awake with a desperate hunger for flesh, he fights the urge to feed, knowing that once he gives in to temptation, there is no turning back.
Tavarra’s deepest desire was always to be human. By the time she was granted her one true wish, the journey had already claimed those she cared about, including Perin. Alone and on the brink of forgetting how to truly live, she searches for new purpose.
When Perin finds Tavarra, it gives them both the strength they need. Despite the unpredictability of him being the monster this time, Tavarra chooses to help break Perin’s curse by journeying with him to retrieve an enchanted liquid for the Stone of Desire. Tied by fate and loneliness, they must cross the sea into a deadly part of Laith, and find the liquid, before Perin’s increasing hunger overtakes him.