Izumi Hoshi (Kanna Hashimoto) is senior in high school, but she led a small yakuza group in her past. After killing her uncle's murderer with a machine gun, her yakuza group disbanded. Izumi now lives an ordinary life as a high school student and works as a manager at a cafe. A dangerous situation soon awaits for Izumi.

Yakuza underboss and schoolgirl Hoshi Izumi intends to become a regular student once again following a period of unleashing bloody revenge upon those who murdered the former yakuza boss. However, the fix is in when a classmate dies in a haze of drug-related circumstances. Izumi is compelled to redraw her machine gun and train it on a cadre of unavoury businessmen, politician and yakuza.

imdb:tt4807908