It's been a long while since I watched a K drama and bear myself to see the end of it. This drama is definitely the GREATEST comeback of K Drama legacy.
The storyline is not that intriguing when you read the synopsis but the ACTING of almost all the cast, delivering the feelings, the comedy, mixed in with the suspense and the bad character being really bad which makes the viewers get into the drama, and both Kim Soo Hyun's and Kim Ji Won's characters, lines, aegyo, couple chemistry, they are what makes the drama superb.
I was waiting for the episodes release day, which hasn't happened since Goblin I guess. So I understood the hype about it and it's definitely worth it!