The Code of Solitude (2013)

Honda (Koji Matoba), a former Self-Defense Force officer, returns from Iraq emotionally scarred, losing his wife and daughter. He becomes a driver for the yakuza boss Isogaya (Noh Terada) but feels nothing in his hollow life. His emotions are stirred when he meets Kiriko, the wife of a man who committed suicide in Iraq. Kiriko, now Isogaya's mistress, encourages Honda to "live until you die." Motivated by her words, Honda begins a search for his daughter, plunging into the dark world of the yakuza.