I just finished this kdrama and I think it will be one of those where I will ignore what I didn't like so much just because what I did like had more weight.
I decided to watch it when all the episodes were available and I think it was a good decision, I would have despaired of having to wait every week for a new episode, although I will admit I was a victim of spoilers.

Knowing all that, I think it was quite worth it, and in contrast to other opinions I consider it does deserve the hype. I clarify I'm not saying it was perfect because I agree that several things could have been better executed. However, knowing that I don’t dislike clichés and usually enjoys the usual structure of romance kdramas, this series was quite to my liking. Maybe it's because I have a weakness for these kinds of plots, it already happened to me with Twinkling Watermelon and A Time Called You.

Now, what things didn't I like so much?
Initially I feel it was hard to believe that the adult ImSol was in her teenage body as she was still behaving and making decisions like a teenager would from my perspective and that made me exasperated at times by her actions or attitude. I understand that she thought what she was doing was the best thing to do, but sometimes it was just like "was this necessary?"
Another thing was that the villain somehow ended up being just a flat character and they don't end up explaining in a more reasonable way why he had tangled himself into all their time lines so insistently. Yeah, he was a psychopath or something, but that's just so meh. Still without mentioning a word, he kept getting on my nerves, I just would have wished for a little more of background.
The same thing happens to me with InHyuk and TaeSung, I was delighted every time their characters came out on screen and I would have liked them to be included more, as in the end we are given to understand that specially TaeSung ended up being very relevant.
And about the grandmother, was she some kind of deity?
There were also moments when the transitions between times were so confusing, I didn't know if what I was seeing had happened before or after, then I could understand but I don't understand why it was so confusing.

Something I would have wished, this time very personal, is that when they met again in the final timeline they would have done it like the first time, with the rain and repeating the umbrella scene, it would have added many more points. However, that's not something so relevant lol.

Buuuut, like I said before, there were more things that I really liked so I was purposely ignoring all of the things I said before.
All of the romantic scenes had me giggling and kicking my feet, the chemistry was on point, I should say. The male lead made me smile a lot, he was just too cute, sorry, I’m just too biased by WooSeok, he played that character really well. And speaking about acting, I think everyone did a good job.

I laughed a lot with the funny scenes and I was moved on many occasions, both sad and happy, so I must say that I enjoyed every chapter. Regarding the ost, I declare myself a total fan, the songs are all very good, they accompany the scenes well and I liked the ost so much that I will keep listening to it. “Sudden Shower" is just beautiful.

I liked the ending of the story because I did wish he would get his memory back, it would have hurt me that all those nice moments and the time they spent together went away.

I probably missed things, but the truth is that I would recommend it if you are the type of person who enjoys kdramas and doesn't dislike teen romances and time travel.

I will give it a high score because I certainly enjoyed it from beginning to end.