Petos is a world where your power defines your strength, as well as your place in society. While royals are almost guaranteed an ability based on their bloodline, it has been increasingly more common for commoners to obtain such abilities as well. In the year 306, twin brothers Aza'zel and Casimir both are coming of age to be eligible to take the throne of their father, King Cyprus. While Casimir has been gifted with his own ability - the rare power to oppress or negate another's power - Aza'zel has yet for his own power to emerge. As tensions rise between nations set on War, an unforeseen event causes Aza'zel to be separated from his family, and sends him on a quest determined to find out why the events on that night transpired.
4 years later at the age of eighteen, Aza'zel has now sided with the Northern Rebels in an attempt to clear his way for the throne, and overthrow the corrupt government that led his family's name to shame. With no evidence of his family's whereabouts, Aza'zel is determined to sacrifice anything it takes to get his revenge. Through treachery, treason, and resilience, Aza'zel will undergo countless trials to make ends meet; but will his revenge and new abilities blind him with arrogance, or will he finally be able to come to terms with both himself and with his brother?
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.