Kunigami Rensuke is the Prince of the East Kingdom. Since he's now 17, he had to get married, but no one wanted to marry the intimidating Prince. So his parents offered a high payment for the person who volunteers to marry him and this person's family.

You were always poor, and your father has a lot of debt to pay. So, without you knowing, he betrothed you to him.

"Ah, so you'll be the one marrying me." Kunigami looked at you. He clearly isn't happy about the arranged marriage...