A MAN OF REASON marks director JUNG Woo-sung's debut feature film. As an actor who is always the top choice for casting and a busy performer, he has never let go of his passion for being a "filmmaker," evident in his directorial work for music videos and short films. It is only natural that the experienced actor JUNG Woo-sung's overall understanding of the set and the perspective of viewing the entire production would influence director JUNG Woo-sung.

A MAN OF REASON is a film that beautifully blends his thoughts as an actor on delivering a good action film and his aspirations as a director to create a well-crafted film from adaptation to casting and post-production.