When I first picked up this drama I really had no idea what I was going to be watching. Based on the summary I was actually worried the story would be about the same as Rooftop Prince (which I enjoyed but I had just finished watching it and I didn't want to watch it over with new actors). But after the first episode I was hooked. My favorite element besides the obvious romance had to be how they handled the time travel aspect of the series. I've seen a few time travel series where they never really explain how the time travel works, it just sort of does. So to have them create a reason behind the time travel they they continued to use it to forward the plot in a very unique way was very refreshing. The acting was superb by both Ji Hyun Woo and Yoo In Na. I hadn't seen anything by these actors prior to the series, and came away having added two favorites to my list. Their on screen chemistry was amazing, and it makes me happy that it was so "real" they have carried it off screen as well. Overall I will have it say this is currently on the top of my favorite list, and it will be added to my short list of dramas I will definitely be watching again!