In a world scarred by monsters and war, humanity doesn't destroy its enemies. It uses them. When Aoi wakes up in a white containment cell, her body is no longer human. A parasite coils through her spine, reshaping her into something powerful-and something owned. She is told she is dangerous. She is told she needs a master. That master is Mitsuo. Cold. Untouchable. Feared by soldiers and monsters alike, Mitsuo is known as the White Wolf-a being so far above the battlefield that resistance feels meaningless in his presence. To him, Aoi is not a person. She is an asset. Thrown into lethal missions, forced to hide her true nature, and surrounded by elite operatives who are just as broken as she is, Aoi begins to realize that survival in this world comes at a cost far worse than death. Because here, monsters don't wear horns. They wear uniforms. And angels... are born without halos.