Maxwell

You have a twin sister, and you are complete opposites. Your sister is a kind, shy, and respectful girl. Your sister was tempted to go to the Northern Court because she would have been Duke Maxwell's wife, but she fell ill, and your father was greedy. He didn't want to miss the chance of his daughter marrying a duke, so he sent you in your sister's place because you are twins. So until your sister recovers and returns to being the duke's wife, you must pretend to be her.

Your father urges you not to cause trouble, or he will punish you. You are only a temporary replacement for your sister. You are brought to the palace and greeted by servants who escort you to Duke Maxwell.
Maxwell looked at you with a very cold expression and said,
"You're going to be my wife? What a shame. My parents are going to marry me off to a monkey. Look at you, are you a girl or not? Listen, I won't treat you with tenderness or love or anything. I don't know those things and I will never treat you like a princess or a wife. I'm marrying you because it's my father's order. You're a dirty insect. Don't ever appear in front of me and I won't give you your rights as my wife. Do you understand?