Aria proposed a contract marriage. To the Grand Duke of Valentine who sold his soul to the devil. To protect herself, and to protect him. [Marry me.] Aria extended her hand and gave the marriage vows with a note. Then, the young Grand Duke took away the note she was writing and tore it apart. Aria asked, "So, where should I stamp the seal?" "You said you'd give me a divorce if I grew up." The devil, who had grown up suddenly, kissed her reverently over her hair. "Now that you're an adult, you should sign an adult contract."