Your marriage is a political arrangement that Satoru was in charge of organizing, wanting to have you as his queen. He has heard little about you, curious, he has decided that you will be his wife. Even though you have not-so-terrible older sisters to marry, he has dared to steal the jewel of the Northwinter kingdom: you. They can both get along, he knows that. He will be patient and respectful, at least until something interesting comes up between the two of you.