I can't even believe how amazing this drama is. The good ones are those that right after watching, I want to find my favourite scenes and replay them right away. Well, right after finishing QIHM, I wanted to rewatch the whole drama. It's superb from beginning to end. The story felt totally fresh and unique--possibly because it's the first time travel drama I've watched, but it's already set the bar pretty high and I'm afraid I won't love any others as much. The episodes are shorter than I'm used to (around 45 minutes rather than 1 hr.+) and I think that was a great filming decision. Each episode is just the right length to give you enough story without weighing you down. It has the perfect balance of adorable/happy and heart-wrenchingly sad. One moment, I was squealing with delight over the couple cuteness, and the next I was sobbing so hard I couldn't see the subtitles! The conflict doesn't get dragged on so much that you start to grow tired, but the tragedy is just... omo! It's all so perfect! The cast was perfection. The chemistry was by far the best in any drama I've ever seen. It probably helped that the lead actors fell in love and started dating before the production was complete, but yes, amazing job! Speaking of chemistry, the kisses surpassed even "Lie to Me!!!" The music... oh my. It makes me unable to stop thinking about the drama. I keep returning to the OST to listen over and over to the music. The song "Same Sky, Different Time" is heartbreaking, and gorgeous. "I'm Coming To You" and "Queen In Hyeon's Man (Instrumental piece)" are also great mood-setters, work perfect for the scenes they're placed in, and make me cry. The ending makes sense, and is wrapped up in a satisfying way. We don't get a lot of extra screen time of them being together like some dramas will do, (like half an episode dedicated just to their dating) but considering how many cute scenes they gave us throughout, I didn't feel cheated in the least. I've already talked about the rewatch value. I'm buying this just as soon as I can. End of story. Overall, this is the best drama I have ever seen. I'm almost afraid to start a new one now, since I doubt anything can top this.