The world is divided into white queens and black queens. Just like the literal meaning of the name, people with white queens tend to be warm, kind, and reasonable in nature, while people with black queens are more selfish, vain, and incomprehensible.
The main plot is that a cold and cruel Duke who loves reading falls in love with his special maid.
[Pause this article for now, I'm out of inspiration, I don't want it to be unfinished, so I'll preset the ending to be 50,000 words long]