[DUB] UN-GO (2011)

As the prisoner explains how he is 'a novelist who writes in reality', a strange being accompanying him traps Shinjuurou in a vision where he is a cameraman shooting a film about a war that never happened. As Shinjuurou becomes curious about whether the director is involved with one of the actresses, he gets the nagging feeling that there's a mystery to be solved. As Shinjuurou loses grip on this reality, he discovers the director has been killed and believes himself to be the culprit.