許嫁が出来たと思ったら、その許嫁が学校で有名な『悪役令嬢』だったんだけど、どうすればいい?

My fiance is a cool, dry, and foul-mouthed villainess!? A few days into the new semester. One morning, the life of ordinary high school student Hiroyuki Higashikujo changes completely. A perfect young lady, Ayane Kiryu, nicknamed the "Villainous Lady" for her intelligence and beauty...is she my fiance?! The two are contrasting in terms of family background, status, and personality. And their relationships with friends and childhood friends will soon... The exciting coming-of-age story of two people who meet with various feelings begins here!