The only saving grace for this drama is the phenomenal delivery by our leads and the OSTs.
These 2 reasons are why I picked this drama up after I dropped it after ep 13. I just had to see the end of it.

The love story between Haein and Hyunwoo is beautiful. I find it lacking in the overall execution just like the rest of the drama. Even though the feelings that we needed to see were beautifully conveyed by the acting of Ji Won and Soo Hyun, there were a lot of misses in the direction and writing.

The side plots weren't interesting enough for me tbh, I could have done without some of them. They needed to be properly developed and woven into the main story seamlessly!

The villains, Eun Sang and his mother didn't get the ending they deserved! It was rushed
I think giving Dahye and Grace redemption arcs was a poor decision. Not everybody needed to sing "Kumbayah"

I understand this is fiction, but some choices and decisions that Soo Cheol made were unrealistic and made zero sense. They were just written as part of "a great love story" that failed to hit the mark. It was plain idiocy!

The dramatic effects in this drama were more prioritised than making a great drama that made sense and followed a natural progression. It was just one bad decision after the other.

I could list everything wrong with this drama but frankly, I'm too disappointed and over everything that could have been better done in this drama.
The anticipation I felt for this drama from the moment the leads and main plot were announced was completely let down. If I were to rate it based on my disappointment, I would rate it a 5/10.

It's getting an overall 7.5/10 score because the acting from our leads needs to be praised and the OSTs were so beautiful!

And lastly, the hype this drama received is due to the acting of the main leads, and their unbelievable chemistry and because of that I can't in good conscience say the drama was totally overhyped.