Ragna, the heir to a frontier noble family, is a former reincarnated Japanese, and this is the world of the Otome game he knows. He wants to live a carefree, easygoing life, but he is at the mercy of his unfamiliar territory management. Suddenly, a marriage between Ragna and a high ranking nobleman is arranged. The duchess Alicia, who married Ragna, turns out to be a “villainess” from an Otome game...?