It's Hard for a Dandy to Teach Him a Counterattack Gift for a Princess Who Marries Him

A woman who was double betrayed by her best friend and husband traveled to an imaginary era and became a concubine who was not favored by the prime minister of the dynasty. She married the seventh prince of the current emperor on behalf of her eldest daughter. The seventh prince was a playboy. From the beginning, they disliked each other to the end of their love!