I never rate any Korean drama to 3, if I don't like plot, or if I didn't like the actor or actress, I just skip it, but in this case, I want to provide my rate so that people won't waste their time and feel frustrated like me. Why I completed watching this drama is Shin Se Kyung and Im Joo Hwan acting. Even school kids acting will be much better in school drama compare to the main lead acting. Now onwards Nam Joo Hyuk is black listed.
Dong Ha was the best actor in the drama, dynamic reactions, in seconds he changes his expressions, Story was dragged a lot, but over can watch, 30 episodes would have been good, instead of 40
The story and execution were perfect for the concept the director has chosen, thou I don't like the concept, if I had known before, I might not be watched it.