These Men, Violent as They Are (2011)

Under a flickering fluorescent light, glimpses of brutal yakuza violence fade in and out... beside them, a man vomits. This man, silent and suffering from epilepsy, (played by Ozawa Hitoshi), has apparently "taken care of" two thugs who crossed him. Now, both the police and his own yakuza clan are after him, determined to restore their honor. But when this man snaps, the city is drenched in a storm of blood... a tale of men driven to the brink, where everyone is ferociously unhinged!