After the Country Was Overthrown, I Became the Canary of the Enemy's Tyrant

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.