[Crossover Horror] There's Something Very Wrong with My Boyfriend

Joanne always believed she was an ordinary person, but nothing she went through was ordinary. Like trying her hardest to keep Hannibal from discovering she wasn't his original girlfriend; Like babbling nonsense to the Joker just so he wouldn't push her off a skyscraper; Like crouching beside a blood-soaked corpse, trembling as she kissed the hem of the Dark Lord's robe; Like standing in front of a Japanese-style house, staring at the shadow by the second-floor window... System: Your task is simple. You don't need to change them, or do anything for them. System: All you have to do is survive in their hands for 30 days. Joanne: ...I'll try. Joanne thought it was her chance to survive, but in the end, she was trapped in a rusty cage called "survival." =Content Warnings= 1. Third-person narration, quick transmigration. 2. Includes the TV version of Hannibal, Harry Potter, Constantine, Batman, and various thriller and horror films (excluding Japanese and Korean ones). [Synopsis revised for the second time on 2020.9.2, from a single script to a crossover] [Synopsis revised for the third time on 2020.10.5] Theme: Challenging the limits of humanity