This screenplay has to have the most diverse story line I have ever watched in an Asian drama. The story twists and turns from present to past to present and has strong story lines for supporting characters in addition to the the two main leads, who are actually four different people themselves (two each). This drama is only on episode 8 but is revealing some pretty heavy secrets already. The writer wittingly keeps us guessing the true identity of the two leads, especially the male. They both have a pseudo identity who is a mix of past and present identities. There are many deep topics covered in the drama such as same sex attraction, suicide and murder. The murder has not happened in real time as of yet and the culprit has not been truly revealed only suggested. There is innuendo at every turn but I have learned not to take anything for granted. If you like mystery, romance, time travel, teen love, and a complicated plot, you will enjoy this one. I am so in love with the main OST as well. The song Last Dance by China Blue is the vehicle that spurs the time travel by the way, but this is not realized until episode 8 by the actors. Alice Ke and Greg Han are both adorable in this at times. I have to say that although it is deep frequently, do not give up on it after a couple of episodes. It gets better and better. As you can see I am totally enjoying this drama so far. I do have a bit of trepidation of how it is going to end though. Of course, I always hope for a happy ending. But, no mater I am loyal until the end! I am watching it on Viki

update! I just finished episode 13 without subtitles and let us just say, I didn't see that coming. I am so in love with this couple and their romance! They left it open ended so that there could be a season two which would be a dream come true. Pun intended! Wow! I just finished watching this drama and I feel no written review can do it justice, simply because the level of writing in this drama is the best I have ever seen. It can not compare with my little review. The plot is so in depth. It has so many layers that twist and turn and often overlap that it is difficult at times to sort it all out! But you do in the end! The plot revolves around the two main characters, which actually are four (two each) as well as a well developed second layer of active characters whose roles are recurring. The four main characters are played by Greg Han and Alice Ke, each playing double roles. The romance factor is a 10 and the mystery/suspense factor is also a 10. I guarantee once you begin watching, you will not be able to stop until the end so plan accordingly! This no light drama. The plot includes murder, suicides, a love triangle and even a wonderful second lead. The music became my favorite song as well. There are some sexual undertones so this is not recommended for younger viewers. A 10 overall. I will not give away the ending! But, lets just say, I didn't see that one coming! This is a hidden jewel! I can see it becoming a cult classic in the future!