Angel Bite by Ines Gray

Medical examiner Claire Thordis survived the impossible once before—a family tragedy that left her the sole survivor and forever changed. Now, bodies are disappearing from her morgue, a fallen angel has crashed into her perfectly ordered life, and she's being dragged into a supernatural world she never knew existed. Between dodging demons and unraveling ancient rituals, Claire finds herself falling for Seung Moon, a half-angel warrior whose dark secrets match her own buried pain. But when her best friend throws herself into a mystical realm to complete a dangerous transcendence, Claire must choose between the safety of her carefully controlled existence and stepping into chaos to save the people she loves. Seung never expected to lose control. Not of his demonic bloodlust, not of his heart, and certainly not to a human medical examiner with a sharp tongue and even sharper survival instincts. As a Nephilim haunted by his father's cursed legacy, he's spent years suppressing the monster within. But Claire's presence shatters every defense he's built, awakening desires he can't contain and a protective instinct that terrifies him. When a mystical enchantment marks her as a target for the darkest forces in both realms, Seung faces an impossible choice: let fate take her away, or fight the gods themselves to claim her as his own. Racing from Kansas City to the ancient tombs of Egypt, Claire and Seung must navigate possessed ex-boyfriends, demon dogs, Rogue Watchers, and a dangerous ritual that could reunite soulmates—or destroy them forever. As an otherworldly bond forms between them, they discover that some love stories are written in the stars, while others must be carved from darkness and blood. But when destiny tries to tear them apart, they'll learn that the most dangerous thing in any realm is a warrior angel who's finally found something worth dying for.