Why was Woo-jin (North Korean Birthday soldier) shot multiple times?
The first act of the movie hammers on about the idea that he could've only been shot multiple times because someone had a vengeance. What I don't get is, in the Mexican standoff scene, which character has what kind of motivation to shoot this guy multiple times?
I assume the person that shot him multiple times was Sung-shik (the dopey South Korean soldier), although the first killing shot was delivered by the main South Korean soldier.
Can anyone please help me deconstruct what exactly went on there?