I wanted to like this drama. I really did. But, after episode 5, I just couldn't pull through. There is nothing really wrong with it and story as a whole since the purpose has been already introduced to us in the very 1st episode.

Yong So Joon, a CEO who has the ability to time travel attempts to alter his future to prevent his death... which coincidentally happens alongside Song Ma Rin, a photographer.

What I found lacking was the balance between characters. We see 80% of the story from So Joon's point of view.
My biggest issue was perhaps with the female lead. It seems as if the writers put all their efforts into delving deeper into making the male lead a mysterious figure.
Song Ma Rin on the other hand reminded me of play dough. Yes, there are hints about her troubles, but for someone who has suffered so much for 30 years, she was one of the most delusional female leads I have seen. Her own evil friend points out that she was overboard with her thoughts and actions.
I did not understand her at all -- she acted cute, revealed her insecurities and that was it. If I'm supposed to sit through 16 episodes, there must be something that is worth it with the characters.
The time travel aspect is alright and the real mystert begins right after episode 5, but I no longer have any interest in finding out what lies ahead. Maybe I'll pick this drama up again someday.