Princess Orianna suffers humiliating banishment from Aurelion after failing her coming-of-age aptitude rites, branded completely devoid of magical spark. Wandering the forbidden boundary lands, she trips over forgotten ruins, inadvertently shattering a thousand-year prison that binds Lucifer, the terrifying monarch of the netherworld.
Bound together through an accidental blood contract, Orianna discovers her dormant talents while tutoring the brooding demon lord in human customs. As tyrannical usurpers drug her royal father and seize the throne, Orianna masters destructive arcane disciplines, preparing to storm the imperial palace alongside her monstrous benefactor to reclaim her birthright.
