Acedia by Colette Rhodes — book slip

Iris has always lived in the shadows of the human realm, yearning for a life beyond her current existence. When an opportunity arises to escape to a realm filled with mysterious monsters, she seizes it, hoping for a fresh start. In this new world, she meets Damen, a charming prince known for his humor and light-heartedness. However, beneath his jovial exterior lies a depth that only Iris can see. As they navigate this strange realm together, Damen finds himself willing to face any obstacle for Iris, who believes in him more than he believes in himself.

Acedia is the final book in the Shades of Sin series, featuring humans and their not-quite-so-human partners. For readers 18+.