Two ideas focusing on black slavery.
1. The Widower - Rich, lonely and powerful James Nelson was not happy. Alone in the world he purchases a family of slaves to help with his property. He treats them well and is surprised at how they change his life for the better.
This scene could go many ways. It could be kinky or perhaps he could fall in love?
2. The Lady of the House - With just her crippled husband the family of slaves for company it could be lonely for the Lady of the House... but after seeing the size of those black cocks she hooked!
These stories could work with fantasy and orcs too maybe?