I started watching this drama only because I was curious to see Nam Da Reum in his first main role. Lets talk about the story first : Lets be honest, it is a web drama for teenager, it is easy to watch and doesn't require 16 hours of your time to be watch. The drama is mainly aboutthe stressof korean high schooler and their pressure about grades mixed with evil spirit. The story lack some character personal development but in 12 episodes of 20 minutes. I am sure they did they best. As for the actors, they all did an amazing job and really show amazing skills. The music is amazing and reaally help you feel some emotions. I personnally won't rewatched it but who knows? Nam Da Reum might take me there once more.