I don't write many reviews (so bear with me) but this show is just so amazing that I felt like I had too. I've just finished rewatching it for the 2nd time, and I still love this show as much as I did the first time around. Ever since watching it, it's remained in my top two k-dramas.

The show genre promises thriller, suspense, and mystery and that's exactly what you get. The plot is full of a lot of twist and turns, with the big twist in particular being fantastic. What I like about it is that the twists don't come out of nowhere, there are a lot of hints that you can pick up on to see where its going (which is also why this has such a great rewatch value, because there's so many small details you initially miss). I can understand that there are moments where it gets just a bit frustrating and heavy handed, hence why I didn't give the plot a 10/10 but overall, it's a great story. The ending is also in my opinion perfect, and one of my all time favorite k-drama endings.

The acting, especially from our two main leads is spectacular. Their characters are smart, fun, but also vulnerable and quite three-dimensional. Lee Joon Hyuk and Nam Ji Hyun also give their characters great chemistry, so you get very invested in the relationship between the two of them as well. As someone who has seen many of Lee Joon Hyuk's drama's, I can easily say this is my favorite role of his. It's very dynamic and full of emotion, and his acting is great. I cannot speak too much to Nam Ji Hyun because I've only seen a couple of her other shows, but she does a fantastic job in this, and her character was refreshing from most typical female leads. The side characters also act quite well, in total lending to a very interesting cast that helps support the show.

The music isn't that memorable, but it's definitely fitting. It does a good job of setting the atmosphere and emotion, even if you don't really notice it that much.

As I said earlier I believe the re-watch value to be very high, because there are so many little clues that you can catch onto the second time around. It's a show I find myself going back to when I don't know what to watch, because it never gets less enjoyable for me.

All in all, I highly recommend this show. It's my favorite time travel show of all time, and if you're looking for a shorter watch, but one that still has a fulfilling plot and well-fleshed out characters, this is definitely the one for you!