This show had an incredible mystery and was satisfying in a way that most shows in it's genre, Asian or western, fail to be. This was the first K Drama that I am glad that I did not binge watch because it gave me more time to appreciate the story. What I liked: - Story-telling. Once you watch a couple of Asian Dramas you know how most of them will end. There are usually only a few ways to resolve the story and unless they completely jump the shark, most stories are pretty predictable. THAT WAS NOT THE CASE HERE. Each episode deepens and complicates the mystery in a way that I kept finding myself thinking... I have NO IDEA how they are going to finish this story. There were honestly a lot of similarities between this show and the movie Looper and the show Lost. While Looper did a good job with time travel, I feel like Nine did a much better job telling it's story than Lost did. - The ending. I know it is a little controversial but I loved the ending. It answers most questions but because of how complicated the alternative universes have gotten, it definitely still leaves some questions unanswered, which I liked. Everything goes full circle and you realize how careful the writers/producers were with the attention to detail. - Love story. I was honestly a little turned off by the love story at first. I thought, the couple gets together in the first episode...what kind of build up is that? Boy, was I wrong. It's okay if you don't feel attachment or investment in their love in the beginning, you definitely will by the end. The main couple has great chemistry. - Bromance. Sun Woo's relationship with all of his male friends/family is very heartwarming. Although the Yeong Hoon character is a little ridiculous at times (he spends much of the show running around bewildered from location to location, half the time covered in blood), the friendship between him and Sun Woo is really touching. At Sun Woo's bleakest times, he always turns to his rock and best friend. Sun Woos complicated relationship with his brother Jeong Woo also beautifully evolves over time. What I disliked: - Jeon Dong Hwan. I thought that Chairman Choi as a character was written fine, but the actor playing him spent at least 4 whole episodes making the exact same "shocked" face. You'll know it when you see it, but it is cartoonish, unrealistic, and made me question how anyone could ever take this guy seriously. I've seen Jeon Dong Hwan in other things and he's not awful, so I don't what made him decide to be utterly ridiculous in this show. - The music. I agree with everyone that the music is not great. The show tries to have a few "themes" but doesn't do anything memorable. If they did a better job with the OST, I think this show would be even more of a classic. Overall, I recommend this show to anyone, regardless of if you're a Asian Drama fan or not. The time travel idea is not new but the 'rules' that are applied to the time travel in this show make it exciting, risky, and a constant tool for moving the story forward.