I did NOT expect to watch this drama. The first time I saw the trailer I was terrified and had no intentions of watching it but after my friends pushed me to watch it, I gave in. 15 MINUTES into the drama I was already hooked. The Show was AMAZINGGGG the first 5 episode it was just so addicting. But after that, I guess I could understand why the show was dragging because they had to extend the cast to the military too and less toward the students. I am satisfied by the ending because I thought most of the characters would die and only one would remain but a lot of the characters survived so I was happy about that but some important characters did die and that was really painful. This is a drama you would binge watch in a few days because if you extend it or drag it. It may become boring because this drama starts fast-paced like most netflix thriller dramas. I highly recommend for stress relief because your mind will only be worried about what will happen next in the drama rather than your outside world.