Crows Zero (2007)
The students of Suzuran High compete for the King of School title. An ex-graduate yakuza is sent to kill the son of a criminal group, but he can't make himself do it as he reminds him of his youth. japan, smoking, delinquent, yakuza, mafia, gang, based on manga, criminal, street fight, furyo, japanese high school, teenager, japanese high school student