[Clear-eyed yet clueless college student x A violent living devil at first, later a brooding, possessive, jealous big dog]
Jiang Zhiyu transmigrated into a book as a frail, lowly female supporting character.
She was told she had been bound to a life-saving System. To increase her lifespan, she had to win the favor of a tyrant who killed without batting an eye, and help him become a wise ruler.
So, to stay alive, Jiang Zhiyu began using every trick she could think of on the tyrant.
The first time, she boldly confessed her love in front of him as part of an act. In the end, the tyrant stole her sachet.
The second time, she stayed up late for three days preparing to shine in the palace examinations. In the end, she fainted during the exam.
The third time, the tyrant suffered a sudden attack of his hidden illness during court and started killing without a second thought. Everyone was terrified and helpless. Jiang Zhiyu descended like a goddess and saved them all, only to be thrown in jail.
Jiang Zhiyu, sitting in prison, looked up at the sky and wailed. Heavens, why did I get a story on hell mode!
Later...
Tyrant: "Why are you taking medicine? Do you not want to have my child?"
Jiang Zhiyu: "..."
Tyrant: "Without a child, how am I supposed to rise in status through my son!"
One-on-one romance, both leads are each other's first and only
Ahhhh, it's over now, too soon. It feels like it's over just as it started