Aria offered a contract marriage. To Grand Duke Valentine who was said to have sold his soul to the devil. So she could protect herself and him. [Marry me.] Aria passed him a note that asks for his hand in marriage with her little maple leaf like hands. [It's a contract marriage so we'll divorce 10 years later...] The young master grabbed the note Aria was writing and ripped it to shreds. "So where do I stamp it?" "You told me you'll divorce me once we're older." The young devil grew up and kissed her forehead. "Since we have become adults, we have to instead make a contract for adults."