Let's start with the worst: The Story
Once you truly reflect about this drama, then you will be aware, that the story is lacking. Neither time travel nor the motive of the villain is truly explained. For the villain, they just could have added one scene as an explanation. And the whole time travelling left us with thousands of questions. We don't even know how this whole world works, where the story is happening. But also Sol as a 30+ years old travelling back to a highschoolers body, didn't behave the way one would....

But aside from the story, everything else is perfect (or at least for me). All the actors did a wonderful job, making "boring" characters lovable and charming! Especially FL & ML portrayed the emotions so well, one could feel all the pain and heartache! Their chemistry was great!
The music was phenomenous! While "Sonaki" is a very beautiful love letter, "Spring Snow" sums up the whole drama wonderfully. "Like a dream" is also one of my favourites!

Would I rewatch it? Absolutely! It is sooooooo hilarious! And the romance is very good, got me grinning and kicking like Minmin!

So, why is it overhyped? For a romcom, it's a great series! Fun, lovable and rewatchable with great acting and music. However, for a series, it is lacking (as previously mentioned). So, the more you look into reasoms and try to analyse it, the more you will realize how imperfect this series is. Imo it was a great choice to neglect the background of the whole time travalling, instead of coming up with a not good enough explanation, that would have ruined the whole vibe.