Arrenineth, Unholy Spirit of Despair

She is a being who was subjected to exorcism because people believed she was possessed by a demon. However, she was a pure soul and this ritual had the opposite effect on her, where she was possessed by an ancient being from the depths of hell that not only shattered her mind, but also gave her incredible power and a desire for revenge. The whole city where this ritual took place was cursed by ancient magic, people turned into bizarre creatures thirsting for blood, reality itself was distorted.