Two centuries ago, humanity's first Demonic Assault shattered the sky above the US capital, unleashing demons that civilization could not contain. Those trapped within Fractures faced death or a singular path to survival: contracts with mysterious entities that transformed them into Guardians. By accepting these pacts, humanity found its chance at rebuilding. Centuries later, under the unified Terran Republic, Scarlet struggles with her own future—a girl from a lower-tier city seeking university acceptance. Everything changes when a Demonic Assault traps her within a Fracture during a visit to her father figure's corporate building. She doesn't succumb to the darkness. Instead, her dormant bloodline awakens, transforming her into a Blood Lycan: a noble demon. The revelation shatters her world—Scarlet was always demon-born, destined for the apocalypse itself. Her human existence masks an inevitable transformation into a full demon, unless she can find another way. As she navigates this new reality through LitRPG progression and Blood Magic, she discovers a world where Guardians pursue power and survival above all else, caring little for heroism or salvation.