Corvin is a lethal half-blood assassin who navigates the violent criminal underworld with a single obsession: avenging his mother's unexplained murder. His covert investigation takes a startling turn when he raids an illicit black-market laboratory and discovers Nihil, an amnesiac celestial wielding cataclysmic power behind obsidian, blood-stained wings.
Hunted across rain-soaked rooftops by syndicate executioners, the two wary fighters forge an uneasy alliance that quickly deepens into mutual longing. But as Nihil's fractured memories gradually piece themselves back together, they expose a treasonous conspiracy tying the angel's banishment directly to the execution of Corvin's family.
