Aria proposed a contract marriage to the one who sold his soul to the devil, the young Grand Duke Valentine, of all people.

To protect herself and to protect him.

[Marry me.]

With her little hands, Aria held out a slip of paper with a marriage proposal.

[Since it’s a contract marriage, let’s divorce in 10 years…]

Then the young Grand Duke took the slip of paper, tore it, and said,

“So, where am I supposed to stamp?”

“You said you would divorce me when we grew up.”

The devil Grand Duke, who grew up sooner than they knew, kissed her hair reverently and said,

“Now that we’re adults, let’s sign a contract between adults.”