The acting from all the actors was definitely the highlight of this drama. I had never seen D.O act and was very pleasantly surprised, would have never guessed he was an idol if I didn't know. The soundtrack was quite nice as well but the story wasn't a 10 for me. While it was in no ways boring and mostly kept you thinking and wanting to know what happened next, sometimes there were little parts of the story that were quite predictable.
Even so I wish I could watch it for the first time once again and recommend it to everyone.