The White Moonlight of the Prince Regent Is Actually Me

I Want the Prince Regent's Book, Ahhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh Help Me Kid

The male protagonist is the regent, and the female protagonist doesn't need to be silly and sweet, just be both powerful, either a princess or a medical concubine! I am so addicted to the Regent that I can't help myself. I can't find any good books. Woooooooooooooooooooooooooooooooooooooooooooooooooooooo