I've found that it's better to expect less to gain more when you watch ANY drama/movie so I HATE to over rate a drama. You definitely want to push through the first few episodes to get the most out of this drama. I found Kong Hyo-Jin repulsive in the beginning... it was almost enough to make me stop watching. I'm glad I stuck it out. I am truly grateful that the villains were mild and more like comedy relief than the normal psycho-sociopaths you find in dramas like Hundred Year Inheritance or Bread Love and Dreams. I do wish the physical transformations were as wonderful as the character transformations. I found it a bit lacking compared to most.