The story, my god. It was amazing. There are twists and turns around every corner. YOU'LL THINK YOU KNOW WHAT IS GOING TO HAPPEN, BUT YOU'RE WRONG. The writers have crafted this story so well. The cast----they stick onto you. Even when the drama's over, you'll have their faces and obsession over omourice engraved into your head. I LOVED LOVED LOVED the acting. I sat in the corner of my room and cried my butt off. When Lee Gak and Park Ha cry, it's so sincere that I get goosebumps. The music---it's very catchy. But they keep replaying it over and over again. There was a part in Episode 20 that the music was abruptly cut off. Other than that, everything was A-OK. Many people can get confused by the storyline. So it's a definite MUST, to rewatch the drama. You might catch things that you've missed. ;D Overall, I definitely recommend this drama to those who can handle mood swings. One episode and you'll be hooked. Dare to test my theory?