Look past the obvious pitfall of a story like that - the time slipping, which is the key to the story and it will be a very very very enjoyable experience.

I started the series with no expectations whatsoever, having not read the webtoon it is based on or read any reviews. What started as a tentative dip of toes into this series ended up with a binge watch AND a rewatch immediately.

The story starts with a super fan who was saved from suicide by an idol and how she travels back through time to save him from his death. In the process of trying to save him, she discovers alot of forgotten memories and feelings and learns how he was/is a person who has always been in her life. The result of their realizations is an innocent love that transcends time and space. Its a simple yet very compelling narrative.

The soundtrack sung by the actor himself (as a member of the idol group he is part of in the show) is great. Kim Hye Yoon was amazing - yes she cries in every episode but each tear conveys a different emotion and she is the reason why this series works, she makes Byeon Woo Seok look so good, and now they are both on my radar.

In conclusion - this is one of the best series i have watched so far and is highly recommended.