Fallen Eternity: The Princess Who Traded Immortality

[In a winter empire of steam and blood, an arrogant pureblood vampire princess falls for the assassin sent to kill her. To save her, she will trade her crown, her fangs, and her eternity.] Seraphina is the lethal, arrogant pureblood princess of the Valoria Empire. When Talith, a fierce red-cloaked huntress wielding dual silver blades, infiltrates her domain, a deadly game of cat and mouse begins. But the hunt quickly twists into an obsessive, dark romance. Seraphina doesn't want to kill the assassin; she wants to own her. Their lethal romance is interrupted when a Kaiser’s army of gear-mutants, toxic gas, and dreadnought Zeppelins marches on the capital. In a brutal, high-altitude battle aboard a falling airship, Talith sacrifices herself to save Seraphina, her chest pierced by a mechanical broadsword. Driven to apocalyptic madness, Seraphina unleashes her full terrifying power, tearing the cyborg Kaiser apart with her bare hands and annihilating his army. But vengeance isn't enough. Amidst the ashes of the steampunk war, the immortal princess commits the ultimate taboo: she drains her own golden blood and trades her immortality in a mechanical alchemy ritual to resurrect the woman she loves. Because an eternity in the dark is worthless compared to a single mortal lifetime in the sun with her huntress.