Barbara Seitel, a count's daughter who loves handsome men, was a university student in Japan in her previous life. Due to an unexpected accident, she was reincarnated into her favorite book, and now, at the age of 18, she has a happy arranged marriage meeting, but who is her partner...?! A wicked duke who will (supposedly) plunge the country into the depths of terror in the future!? If I fall in love with him, both myself and my family will be ruined. Even though I know this in my head, the duke's refreshing good looks make my heart flutter, and I can't stop my excitement... Now that it's come to this, is there no other option but to pursue a happy ending with him and his stepdaughter, the future villainess (provisional name), who is committing evil deeds with him?! "I'll show you I can avoid the bad ending!!"