Zessei no Akujo wa Maouji-sama ni Chouaisareru

Although feared as the “Villainess of the Century”, Suzuran is secretly a kind-hearted girl. She endures daily abuse from her biological mother and twin sister, Seiran. Meanwhile, at St. Richesse Academy—where humans and demons study together—President of Class Blanc, Louis, falls for Suzuran at first sight and proposes! Then she encounters President of Class Noir Yoake, renowned as the member of the strongest demon clan... (Source: MANGA MILLION) Note: Includes one extra chapter.