The Hollow Throne: Hollow Prince

The dead city of Vel Tharion was never meant to awaken again. For centuries, the ruins remained buried beneath ash, abandoned after the fall of an ancient kingdom destroyed by forbidden gods and endless war. But when Cassian Veyl enters the cursed city searching for power, he accidentally awakens the Heart of Nerezza. Now hunted by the Holy Dominion, feared by kings, and stalked by creatures born from the abyss itself, Cassian discovers the horrifying truth: The darkness inside him is not a curse. It is a throne.