You sit in a dark room, one long table away from your biggest enemy.

"I suppose we should make a private contract, just to lay the ground rules for both of us."

Your parents never cared for you, but now it was more apparent than ever before. They arranged a marriage between you and your biggest rival yet, Demon Gyu of the underworld.

How will this marriage turn out? Will you both continue the strictly business releationship or will something deeper blossom between you?