Amber Manor: The Girl from the East

An Arrogant Duke vs. a Humble, Sharp-Tongued Black Slave

The merchant brought Wu, a Black slave, back from the East, and the queen bestowed her upon the Grand Duke Tassis.

Arrogant, he hated all Black slaves. Their black hair was as filthy as their souls.

He claimed her, only to become utterly infatuated with her. Before long, he too had become filthy beyond redemption.

An alternate Western setting + arrogance + age gap