Born as a daughter of a gangster family, Hanazame Ranko longs for an "ordinary romance". However, the young head of another group, Sumikawa, always bothers her! People are scared away because of Sumikawa, who is said to be the worst in the underworld! However, he always sticks by her and if she falls in love with him, whe can't go back to "normal" anymore. A heroine who never wants to fall in love x a young head who plays with her, a love struggle without justice, breaks out here!