After the Fall of the Country, She Became the New Emperor's Favorite

The Subjugated Princess × the New Emperor Ascends the Throne (From a Noble Princess to a Slave)

Want to watch something like "Help!" The slave whom the eldest princess humiliated ascends the throne." That night the palace was stained with blood, but she survived alone. Her country was destroyed, and her father, queen, mother, queen, brothers and sisters were all killed.

In the Past, the Female Protagonist Was Arrogant and Humiliated the Male Protagonist. Later, When Her Family Fell into Decline, She Met the Male Protagonist.

The Female Protagonist Is the Princess of the Subjugated Country, the Male Protagonist Ascends the Throne, and the Female Protagonist Becomes His Prisoner.

I want to read a book similar to "The eldest princess was brutally tortured and her country was destroyed, and the ruthless king pursued her to death".