[Exclusive Serialization] Aria proposed a contract marriage. Moreover, it was to the Grand Duke Valentine, the benefactor who sold his soul to the devil. To protect herself and him. “Marry me.” Aria extended the marriage vow with a note in her maple leaf-like hand. “It’s a contract marriage, so divorce in 10 years…” Then, the young Grand Duke, tearing the note he was writing, said firmly, “So, where do we stamp the seal?” *** “You promised to divorce when you grow up.” The demon Grand Duke, who had grown up in the blink of an eye, spoke while respectfully kissing her on the forehead. “Now that we’re adults, let’s make an adult contract.”