[Western Crossover] The Next Generation of Dark Lord Candidates (Gotham + Harry Potter + Magic Awakened)

Content warnings: Fans of the Joker, holier-than-thou do-gooders, and keyboard warriors who love to argue, please don't click. The heroine is not a good person. She has cheat abilities and is powerful, the very definition of a Mary Sue. Chaotic harem drama warning. If you dislike OOC characters, don't read. The pairing is undecided, with readers able to vote for the love interest later. (See the supporting cast section.) The timeline and setting are altered. (The DC timeline is already a mess, and adding other stories meant I had to rearrange and rebuild it.) Please don't read if that bothers you. Before transmigrating, Yu Rao was just an ordinary Slytherin player: max-level Avada Kedavra, max-level Crucio, max-level Obscurus, a soul corruption rating so green it practically glowed, and a habit of going on killing sprees in the dueling arena. She transmigrated at the crucial moment of her ninety-ninth consecutive win, landing in Gotham, the legendary City of Crime that supposedly didn't exist. "Guess this is where the hard-core survival mode begins..." She gloomily gave up trying, And Gotham was every bit as awful as its reputation... In her first life, she survived for only eight years. One morning, the school bus she was riding was rigged with a timed bomb, and the blast hit the bus, everyone aboard, and the innocent bystanders nearby. In her second life, everything started over. She was careful and terrified, consumed by the fear of death, but she still couldn't make it past the age of eleven. A laughing supervillain pushed her off the roof of a hundred-meter skyscraper, and she fell to her death. Time reversed, and she entered her third life. Just as she thought she'd spend her entire life trapped in an endless cycle of death in this rotten world... On her eleventh birthday, a wobbling owl flew over and smashed through the window, landing at her feet. An admission letter from Hogwarts. A regret from her previous life, it had taken two centuries to reach her this time. Eleven years later, it had finally crossed the ocean and arrived in her hands. "I went all this way around... only to end up in Harry Potter after all?!" The downside of transmigrating was facing unknown dangers. The upside was discovering that she'd unlocked every kind of buff from the Harry Potter mobile game of the same name. Like using forbidden magic as easily as breathing, or summoning companion cards out of thin air. Even stacked abilities from desert exploration. "It's a little complicated to explain, but this power actually comes from another world. It has nothing to do with me, really." After fusing an Obscurus, with four bright-green ghosts stacked up from repeatedly casting Flashback Avada on her back, Yu Rao, who looked more like a Dark Lord than the Dark Lord himself, defended herself to her classmates and teachers with a straight face. Mini-scene 1: Question: "How does it feel to be a girl in the Batfamily?" Yu Rao: "Great! Being a rich kid makes you a target. My survival rate went straight from 35% to 10%!!!" (Her face clearly said, "I'm thrilled.") Theme: Love and growth