I watched this drama mainly because it was rated so highly on MyDramaList and I've enjoyed most of the top rated series listed on MyDramaList. It has also recently won an award so I wanted to see what it was about. I was quite disappointed. I honestly don't know why this series won an award, I feel like nowadays series/movies that are confusing and contain some element of "pyscho" are often highly rated and wins awards.
The love story is sweet but the characters didn't really tug at my heart. Like when they were sad, I didn't really feel anything. Some scenes I was just like "hurry up, we know this!". It is also rather depressing and the author seems to really understand depression and may have tried to bring this topic to light.
It had a good air of mystery and what made me carry on watching it was wanting to know what happened. Overall, I really think it is overrated and I just don't understand the high rating but obviously, this is just my view. My summary: it is a story of three guys obsessed with one girl resulting in everything that happened, with time-traveling element. I would definitely not rewatch. The sweet scenes just didn't have that 'awww, I'm totally into their relationship and want to relive it' kind of vibe.