Ling Shu is a princess with a less-than-stellar reputation.
Then one day, a sudden pang in her head makes her realize she's actually the cannon-fodder female supporting character in a tragic historical romance.
Her sole fate in the book is to be used up by the hypocritical male and female leads, bring about the royal family's downfall, and ultimately lose her family and die a miserable death atop the city wall, becoming a stepping stone on their way to ruling the world.
Just as Ling Shu curses the ungrateful leads, a voice speaks: [Congratulations, Host, you've been bound to the Cannon Fodder Life-Preserving System. Keep a low profile, endure hardship, work hard, and survive until the ending, and you can save your life!]
Ling Shu looks at the supreme ruler seated on the throne, his eyes full of indulgent affection, so protective of his daughter that he won't even follow the rules, and falls silent.
Ling Shu: “System, do you know who my father is?”
System: […?]
Ling Shu: “My father is the emperor, who holds the power of life and death over the whole realm. You'd better hope the male and female leads have fathers who are too.”