**This is just my opinion. I truly appreciate all of the hard work and dedication that went into the making of this drama. Thank you.**

It's very difficult to write this without any spoilers but I'm going to try my best.

I was drawn to this drama because of the cast, namely Ahn Hyo Seop and Kang Hoon. They and the other actors did a very good job. Unfortunately this drama has one of, if not the, worst time travel devices I've ever seen or read about in a book. There was never any explanations given. We were just supposed to "turn our minds off at the door" so to speak. I tried. I really, really tried, but seriously. It's really asking too much. At least set some consistent rules for yourself if you're going to go this route and make it make sense.

The male lead characters, Koo Yeon Jun/Nam Si Heon played by Ahn Hyo Seop and Jung In Kyu played by Kang Hoon, were wonderful. Both of them were sweet, very intelligent, kind, self sacrificing and tragic. They were what kept me watching. Jeon Yeo Been did a good job playing the dual roles of Kwon Min Ju and Han Jun Hee. I just didn't like the characters. As Min Ju she was dour, not very bright, angry, resentful, bitter and walked like she was an extra for The Walking Dead. As Jun Hee she was intelligent, outgoing, aggressive at times yet kinder than Min Ju.

Despite the issues that I had with the time traveling and how various aspects of it didn't make any sense to me, I thought that the story itself had some very touching moments. I was moved by the friendship betweean Si Heon and In Kyu and the love between Yeon Jun/Si Heon and Jun Hee. It was worth watching just to see them.