A girl-next-door type, the ordinary senior high school girl, Izumi Hoshi suddenly turns into a yakuza (gangster) boss. The high school girl, who had been completely unrelated to the yakuza world, now defeats evils one after another. It is a truly exhilarating story. The original novel written by Jiro Akagawa is a big hit that sold some 2 million copies! Furthermore, it is a serial drama based on “Sailor Fuku to Kikanju (sailor suit and machine gun),” which was made into a movie starring Hiroko Yakushimaru and was rage of the times.