Lowell, the "ugly duckling" of the Viscounts of Linthea, is sold in marriage to the Dukes of Hikaruel, a vampire.

Rumors that her political partner, the Duke of Hikaruel, has burn scars all over his body and is crippled, etc., lead her to Hikaruel territory, where she is unable to hide her fears.
But what awaits Roel in the Duchy of Hikaruel is Prince Aslan, a beautiful dark-haired boy, and the kind people of the Duchy of Hikaruel...!

Having grown up in an abusive family, Lowell is bewildered by the Prince's different appearance and the warm atmosphere of the ducal family, but he also feels happy.

"Please, let me stay here forever...!"

Unhappy Lowell's life as the happiest bride in the world begins!