So finally finished this... Can't believe it took me this long... But I struggled with the first 4 episodes... then was entertained up to episode 10... and then for some unknown reason slugged through the last 6 episodes.
I really wish I liked this as much as everybody else but for some reason this show wasn't "it" for me. I can't say it's a bad show... But reading other negative reviews... I finally was able to put my finger on what made me struggle with this show：

1. The pacing
2. The pacing
3. The pacing

Basically, this show was really good at creating interesting and engaging storylines but then didn't give enough time to them. It spent too much time on the less engaging ones. It didn't deliver on the romantic front for both couple... It was better on the friendship and youthful aspect, but it didn't deliver at all on the most interesting storylines created such at the relationship between Cheong Ah and her father nor between Se Kyung and her daughter or Se Kyung and her father or Se Kyung and her adoptive parents。 I'd rather they didn't introduce these conflicts if they had no intention of giving them a proper amount of time to be resolved in a satisfactory way... when there was a resolution for that matter because some questions are just... not answered. Yes I'm frustrated.

The end was rushed so that's another minus.

Now, most people really enjoyed the show and were able to get over it in spite of its flaws... And I get it, some of my favorites have plotholes and flaws I just disregarded because ultimately these shows delivered on what I cared most... But this show didn't. It introduced lots of storylines and only delivered on those I cared the least while giving some off-screen resolution if any to the ones I cared the most.

This made each episode feel really really overly long to me.

I know I'm part of the minority so don't let my opinion deter you from watching it. I still gave it a 7 which in my book means that it was enjoyable in some way.