Exchange System from the Start: I’m Invincible in the Apocalypse

[Apocalypse + Special Abilities + System + No Romance + Strong Female Lead + Slight Ensemble Cast] When Yun Zhi unexpectedly learned that she was a stepping stone in a male-lead power fantasy, she said, “Do I really seem that stupid?” After reading the story of her own life, she was even more convinced: I really am that stupid. Once she'd finished the whole book, she decisively drew her sword and became the first obstacle on the male lead's path to supremacy. But... after finally dealing with the male lead, why is someone else trying to destroy the world?! Yun Zhi: ... (1. Unless otherwise specified, all characters are assumed to take their mother's surname. 2. Unless otherwise specified, all occupations are assumed to be held by women. For example, “driver” means a female driver, while “male driver” means a man who drives.)