The Songbird and the Heart Stone by Carissa Broadbent (new) (hardcover)

Grumpy x sunshine, “who did this to you?” Mische lost everything when she was forcibly Turned into a vampire – her home, her humanity, and most devastating of all, the love of the sun god to whom she had devoted her life. Now, sentenced to death for murdering the vampire prince who Turned her, redemption feels impossible. But when Mische is saved by Asar, the bastard prince of the House of Shadow with a past as brutal as his scars, she’s forced into a mission worse than execution: a journey to the underworld to resurrect the god of death himself. Yet, Mische’s punishment may be the key to her salvation. In a secret meeting, her sun god commands her to help Asar in his mission, only to betray him… by killing the god of death. Mische and Asar must travel the treacherous path to the underworld, facing trials, beasts, and the vengeful ghosts of their pasts. Yet, most dangerous of all is the alluring call of the darkness – and her forbidden attraction to Asar, a burgeoning bond that risks invoking the wrath of gods. As her betrayal looms, the underworld closes in and angry gods are growing restless. Mische will be forced to choose between the redemption of the sun or the damnation of the darkness.