I watched it all in a day, that's how good it was. Although some parts may have been exaggerated, it was great to get an insight into the Korean compulsory army service. Jung Hae-in's character was amazing, as were all the others, but I thoroughly enjoyed seeing him portray a different type of role to his usual characters. All the supporting characters were also really good. The drama portrayed how some people really do have no humanity left in them, and we as a society just have to accept that. Here's to hoping for a second season.