"I have a fiancée?" One day, Higashi Kujou Hiroyuki, an ordinary high school student, is told a surprising fact by his father about an arranged engagement. His fiancée is Kiryu Ayane, the "Villainess" at school, known to everyone for her sharp tongue and coldhearted personality. A heartwarming love story of two high school students that melts the icy heart of a "Villainess" begins.