This drama starts pretty well. The story is not very original, it's one of those classic 'damsel in distress' plot with a touch of fantasy. Nothing wrong with that.
My problem is with the main's character lines... It's like writer's believed that Kim Yoo-jung and Song Kang physical appearance's where enough to fill the plot. Instead of exploring the relationship on a deeper level, we're sitting through several minutes of empty stares, futile discussions or Jeong Gu-won chaging outfits like it's a fashion show. Don't get me wrong, I like playful scenes but this was painful to finish. Kim Yoo-jung and Song Kang may not be the greatest actors but this was an absolute disservice to their career (even though the ratings will say otherwise), specially Song Kang who already struggles with facial expression.
I wanted to stop after episode 10 but I pushed through. I do not recommend unless you have nothing else to do.