One day, Liddellina Drimore suddenly had her fiancé taken away by her older sister and the engagement was broken off. Before she had time to heal from her sadness, she was forced to marry Friedrich Weller, a duke, in order to pay off her family’s debts. He is a military man and a highly respected figure in the royal family, but he is also rumored to be a combat-obsessed maniac who is only interested in war. Liddellina, who is afraid of his cold gaze, marries him reluctantly, but to her surprise, she finds a surprisingly comfortable life even though she cannot expect love from her husband. Not long after their marriage, Liddellina’s husband goes to the battlefield and her life as a stand-in ruler begins.