Kuro and Shiro were to celestial siblings, rulers of a wild and peaceful world. One day, that peace was disrupted. Shiro, jealous of his sister, created Man, who began to control and destroy the land that they were given. Kuro was horrified by her brother's actions and banished him from the Celestial Realm, stripping him of his powers and making him mortal. Swearing revenge for his plight, Shiro retreated into the shadows, never to be seen again. Soon, all though of him was disregarded for the growing problem that was Mankind. Kuro, now the Queen of all Celestials, decreed that Celestials would retreat to the celestial realm, to leave Mankind to destroy itself. Many years later, signs of a new religion appears, forcing Kuro to once again return to the mortal realm. This is the story of her journey.
In the epic conclusion to the Devil's Deal series, Freya has one final chance to discover the full potential of her own power, and to use it to restore balance in the universe - once and for all. After the destruction caused by Roisin, Ferya and Torix come to terms with their losses and mistakes... And prepare for a final battle that will change everything.