HP: Not a Dark Lord, but a Demon God

She was once a great Demon God, standing alone in the heavens, conquering the world and looking down on all her rivals. She was once a forbidden song. Wherever she went, corpses littered the land and blood stained the sky. She was once a tragedy, without love or hate, joy or anger, wishes or thoughts. She lived alone for countless ages, and in the end, fell into an endless slumber. But now she has awakened. She had hoped to stay out of the world's affairs, yet became the Dark Lord of the wizarding world... This story's pairing: LV/SS. Supporting characters: the Harry Potter cast and the gods. The female lead transmigrates into a man. His personality is severely warped. If you don't like it, click X. This story is wish fulfillment. If you don't like it, click X. Too much angst is bad for you, but a little angst adds flavor. This story follows a healthy philosophy and takes a lighthearted route. The author is unreliable and updates irregularly. The writing isn't great. If you don't like it, click X.