Yuu Yuutani is a first-year high school student with sharp eyes, large piercings and flashy two-tone hair. She's become notorious as a bad girl… but she's really not. At heart, Yuu is an incredibly good girl, but her mind is always full of thoughts of the beautiful and popular Atori Mizutori, the school’s Madonna and head of the student disciplinary committee. So, on her mission to attract the attention of Atori, Yuu decided to quit being an honor student and become a "bad delinquent!”