The Deal with Death: A Pact for Vengeance and Eternal Consequence Death

The protagonist, whose name is John, is a young man who has lived a life of abuse and neglect.John was beaten by his alcoholic father, ignored by his mother, and bullied by classmates at school.
one day While walking alone at night, John encounters an ominous presence.This presence offers him power beyond his wildest dreams, in exchange for his allegiance as its successor.
John is initially hesitant, but he is also intrigued by the power that is promised to him, driven by his desire for power and revenge. John accepte the offer and gained the power but at what cost?