Let me spill some beans, this isn't the time travel fantasy kind of drama you expect it to be. The summary does no justice to this thriller. I started watching it expecting to be some love story where ML comes back in time to save his girl or their relationship. I kept waiting for that to happen but they made it clear in the first episode itself that this is going to be some sugar free romance but the mystery and thrilling side was what kept me intrigued.

Let's talk about acting. You won't essentially fall in love with characters , they are not meant to be. But you will surely fall for their acting. I have watched a drama of Derek Chang earlier and believe me, this wasn't the sweet and loving Derek I knew, this man had a whole new persona that was so eccentric. Lyan Su too did pretty well. Her expressions while thinking about ML are so natural.

Story? Let me repeat, it is really much better than what you are expecting. After watching 2 episodes, I actually came back to check the tags and genres again to make sure that there's some romance in it. There's no ML & FL ending up living together or an other typical drama cliches but a much more natural and mature kind of romance.
Mystery dramas usually unfold step by step but this one only kept getting more mysterious, which they well-maintained until the very last episode.
Sadness is the basis of the story so keep some tissues handy. Because, well, life is not all strawberry cakes and with every superpower comes some problems.

Keeping it short, the direction was just as good as story.

Cinematography (overall look/ aesthetics) might not seem very good to the eyes as it was very dark but it was what gave the drama's theme a boost.

I originally wanted to give this one a 9 or 9.5 but let's gulp down the fact that it has very less re watch value because the mystery is revealed. It pained my heart when average rating was reduced because of it. That's the shortcoming of these mystery dramas.

Will I watch this again? Probably no.

Will I recommend this? DEFINITELY YES!!