Hogwarts: I Rely on Soft Food to Save the World

I am the protagonist, but limited to the Harry Potter novel. The magic of prophecy does play a decisive role in me, but it can only be done before Voldemort dies. The darkness is boundless, ready to swallow me up anytime and anywhere. I can't get rid of it because it drowns my entire soul. But this world is not just Hogwarts where the plot takes place. The Mummy, Lord of the Rings, Diablo, Cthulhu... Most of them existed in the past, but seemed to be covered up by something. Maybe many survivors of the old era keep it secret, but for me, the more chaotic things are, the more they can temporarily curb His food. I don't think about the source of my power, and I have no interest in exploring the origin of the world. I just want to live and live well. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.