Quick Transmigration: The Background Character Has a Rebellious Streak

[Quick Transmigration + Academic Prodigy + Anti-Trope Face-Slapping + Straight Woman with a Harem of Admirers + No CP] At Huaxia University, Lu Xiaoxiao is a monstrous sophomore math prodigy. Logic comes before emotion, truth above all else. She is defiant and doesn't care about anyone's feelings. After publicly exposing errors in a paper by a leading scholar, she destroys his life's work and drives him to his death. His family then stabs her to death. Convinced that truth is innocent, after dying she is bound to the Quick Transmigration Bureau's background-character System. Her mission is to quietly blend into the background of novel worlds. First world: A sweet campus romance. She plays a background character who witnesses the leads' first meeting in the library. She watches the heroine try to strike up a conversation with the male lead by staging a ridiculous pratfall and spilling coffee... Lu Xiaoxiao: “Based on the parabolic trajectory and human biomechanics, you're faking an accident for compensation.” System: [Host! Stop talking! You're a background character!] Later: The wealthy young heir, who was supposed to fall in love with the heroine at first sight: “Hey, you. You're interesting. Could you explain the calculations in detail for me?” Lu Xiaoxiao: ? Sorry, but that's not scientific! Second world: In a cultivation novel about surviving at all costs, she's the male lead's junior sect sister, a background character who keeps her head down. Third world: In a modern entertainment-industry novel, she's a fan at the airport to greet the superstar heroine. Everyone is hopelessly in love with her, but the heroine has no interest in romance. She only loves the truth.