The heroine is the regent and the king has power over the government. The hero is reduced to a lowly status because of a crime in his family. He is treated as a plaything by his opponent and given to the heroine as a man's favorite. The heroine knows that he is a spy sent by the enemy, but she still accepts him and gradually develops feelings for each other as they get along...
Concept: Have nothing to do and thank you for changing the story of the female tyrant and the male Cinderella