Shiri (1999)

Both are espionage action films starring Han Suk-kyu. Both films explore north-south korean tensions and complex relationships between agents from both sides. In both films, characters grapple with loyalty issues to their governments, and delve into the personal lives of the spies hence adding emotional depth.

Both are high-stakes spy thrillers centered around tensions between North and South Korea, featuring espionage, double agents/moles, and national security threats.