Attack on Titan: The Cannon Fodder's Journey

[Synopsis] Jiang Ning is chosen as a player for a real-person transmigration system newly developed by a software company. The company installs the System for free, covers all expenses during the experiment, and promises generous rewards if the player reaches the required score afterward. Jiang Ning is thrilled. A windfall has practically dropped from the sky. But... "System, I want to be the female lead!" [Ding! The player's score is below 10,000. Task information cannot be changed. Please proceed to the next world.] "If you won't let me be the female lead, I'm not going!" [Due to the player's refusal to cooperate, the System is initiating a forced start. Please prepare: 5... 4... 3... 2... 1...] I'm terrible at writing blurbs. Basically, it's the story of a girl who's sick of being a cannon-fodder character and fights against golden-fingered female leads in different worlds. Writing goals: 1. Qing-era transmigration story √ 2. Korean entertainment story √ 3. Reborn story √ 4. Marriage and romance story √ 5. Princess story √ 6. A Stolen Life √ 7. Online game story √ 8. Ex-wife's comeback √ 9. Historical story √ 10. Period story √ 11. Liu Yi Delivers a Letter √ 12. Stepmother's Comeback √ 12. Palace intrigue story √ No reposting, no plagiarism, and no ranking analysis. Theme: