Akemi ( Mizuna Rei ), the only daughter of the Kozakura family in the Kanto region, hates yakuza and lives in a dormitory at a girls' school in Tokyo, but returns to her parents' home after hearing the news that her father has suddenly passed away. Seeing the Kozakura family for the first time in a long time, they are deserted, and the only henchmen are Pinkichi and Sutematsu. They call Akemi their sister. Meanwhile, the Gouda-gumi, who have been growing their power on behalf of the Kozakura family, repeatedly harass the Kozakura family in order to take over their territory. Akemi's younger sister Chie ( Maria Wakatsuki ) , who adores Akemi, also falls prey to the Gota group. Akemi, furious with her, takes the name of her second generation. She wears her sailor uniform and holds a Japanese sword and attacks the Gota group.