Tousuke Rokudou is physically weak and cowardly attending a school filled with delinquent students. He and his two friends live in constant fear and is regularly bullied, leading to the trio venting their frustrations in private in the school's restroom. Upon receiving a scroll from his grandfather, Rokudou gains a special pentagram mark on his forehead. Rokudou's ancestors used this spell to exorcise oni, but in the modern day, the spell causes any "bad girl" to instantly fall in love with him once he makes eye contact with them. His school life drastically changes as not only is he thrust into the delinquent culture of his school, but he encounters several girls, each one presenting a new problem. He helps rehabilitate most of the girls focused on, each one genuinely falling in love with Rokudou or becoming a close ally. While Rokudou refuses to fight in the beginning of the story, his tenacity and refusal to run away has garnered respect from his former bullies. Later, he learns kung-fu and has on learned most of its fundamentals from Ling Lan.