Minerva, a duchess who has given up on marriage after two broken engagements. At a tea party she attends, Minerva is confronted by Rufus, the second prince of the empire, who is feared as "His Imperial Highness the Prince of Jet-Black," a capable but ruthless man! During the tea party, Minerva quickly defends Rufus from the host's unreasonable words and actions. Then, she is recognized for her resolute attitude...? ... The love poured out by the ruthless brother of the emperor heals the wounds in his heart in this doting fantasy.