They say usually the source material is usually better than the movie production - that is not the case here. The series is as good, if not better than the webtoon, with outstanding acting and great plot. Jihoon did a really great portrayal of his character, so much so it's hard to tell he's an idol actor. I watched the drama twice in one sitting when it came out and am on the edge of my seat for Season 2.

The ending of the first episode is shocking and unexpected. The rest of the show is exactly like that - the plot does not disappoint.