Once upon a time, there was a being that was only ever referred to by the name “the Devil.” He used terror to keep people under his control and rule the globe.
In the end, the human race banded together and rose up against him. Soon after, there came twelve Saints who were blessed with the power of heaven, and they were able to finally lock the Devil away.
The Holy Verses are a sacred scripture that contains the incantation of binding that was utilized by the Saints. In order to protect the incantation from being misappropriated in future eras, the Saints hid the fact that they were Saints from the historical records, shattered the Holy Verses into 12 separate pieces, and clandestinely transmitted those pieces to their offspring over the course of several centuries.
After a period of time equaling three thousand years, the Devil has at last discovered their location. In order to assist in the gathering of these texts, he spawned three servants who embodied the essence of Elaborate Death, Sadistic Torture, and Humiliating Demise and sent them into the human realm along with a “daughter” whose soul had been separated from his own. This was done so that the three servants could help collect the texts.
Now, all that is left to do is break the seal that holds him and let his anger go against the race of humans who have fallen.