Let me start off by saying that In Na and Hyun Woo should get together asap. Reason I watched: The kiss scenes, lol. Story: Pretty different from Rooftop Prince, the only similarity was the time travel. I believe that this is as original as a time travelling plot can get. What I loved about it is that, to a certain extent, he could control whether or not he was in the past or the present. It doesn’t get annoying with the constant travelling back and forth (like it did in Operation Proposal). This plot was so well thought out and same with the characters. I don't know what else I can say without ruining the drama. Words aren't enough to explain how good this plot was, you'll just have to see for yourself. Acting/Cast: Wow. Great cast. Great acting. You can't deny the chemistry between the two leads. Nothing more I can say. Music: Fit in with the mood but nothing too memorable. Rewatch value: I hardly ever re-watch dramas and this doesn't seem like it will be good the second time around. Seems like I've gotten everything the first time. Overall: This drama was so cute, so hilarious, so heartbreaking, just an emotional roller coaster ride. It's well worth your time.