This drama has a smooth story, is not dragged not are there any extras. You would not have to skip any part and its interesting to watch the drama. The whole drama has twists and turns, although there is a lack of romance, it wont affect the plot overall. Can watch when bored. Worth the binge watching ~~
P.S i watched this only for Lee junyong, so i dint mind the depth of the story. Over all it was worth it. Do support Lee Junyong for his new drama IMITATION. This drama is a must watch. Do not miss it