Accursed Successor

What's true evil in the face of reality? Does it, or can it, even exist? If so, how do you make it? All these questions are the building blocks of a deep dive into the wizarding world of J. K. Rowling, from the perspective of a dark fantasy writer, such as myself. A weird story with an even weirder protagonist, whose question make brains twist into bloody puddles.
History repeats itself, only different enough to confuse all historians, with a neverending cycle of hate and despair. And as such, the one of pure evil must stand as a hero, and the one of pure goodness as a villain. But in the end, there's only one choice to make, one question to answer: "Can evil be good?"