This drama is a wonder due to its exceptional writing and direction.
It's not your normal drama but so much engrossed and focus on each element, which takes over your attention slow and steady.
The depth of each character is enigmatic as they reveal it slowly which makes it more exciting.
The drama is slow and gets dragged towards the 2nd half, particularly the last 4 episodes.

What makes this drama distinctive is the realism with which it tackles human nature, difficulties, relationships b/w people, corporate hierarchy and how a family plays part in your living.
That misery brings misery and your company matters.
The side character story was pure BS as I didn't like the brother's struggle at all.
It was pure incompetency but still, the characters are characters and the focus was to highlight the what-if situation

The ending is on a positive footnote which is overwhelming.
The most important aspect that many would ignore is the relationship b/w the Husband and Wife that improves as the drama progresses coz initially many people think that in these types of dramas you'll encounter a typical love story which is not the case.
This drama also represents what unrequited love feels like, how it goes and how it ends as well .

Overall, they could've made it 12 episodes and been done with it.
Hence it's an 8.5/10

PS: To me, Lee Ji Ah stole the limelight with her acting skills instead of IU despite having a side role.

SPOILER POST THIS SO DON'T READ :









This drama had such a great ending, I'm glad they didn't show and forced a sh*8ty love story b/w Ji an and Dong Hoon and shifted their focus to progressing the relationship b/w Yoon Hee and Dong Hoon which was wonderful to watch and as real as it could get.
How the affair happened and whatever reasons were given felt so genuine that for the first time you could understand why She did what she did and how both of them were equally responsible for it.
Brilliant writing I must say.