"I'm a young lady whose previous life was as a Demon King, but since I have the chance, I think I'll make this world my own."

A broken engagement scandal that begins at a certain ball in a certain kingdom. The only unusual thing is that the duke's daughter who was dumped was the former Demon King. ※This includes a broken engagement due to "true love" ( ), so it is categorized as a romance story. ※It is a comedy that includes serious elements. Comeuppance is just a side dish.