I recommend "The Demon King's Darling Demon Concubine" to you. This novel tells the story of a modern top-tier killer who transmigrated to a different world and became the daughter of the Prime Minister. Because he offended the princess, he was forced to marry the legendary Demon King. However, the Demon King became better and better to the female protagonist and doted on her more and more. This male lead was a little like a vixen, or a demon king, and he especially doted on the female lead. I hope you like this fairy's recommendation. Muah ~😗