What I liked:
*The characters. The writers put so much detail into the characters, they felt so real and multilayered. The writers gave everybody a reason to act the way that they did and created very realistic and messy characters.
*The performances. Everybody was pretty good in this drama. Han So Hee stood out though, her performance was phenomenal. It was a delight watching her.
*The soundtrack wasn't very memorable but I really enjoyed that orchestral/instrumental music was used most of the time. It really gave more drama to the series.

What I didn't like:
*The plot was a bit too drawn out for me, it dragged a bit. If the drama was shorter by a couple of episodes I think it would have been less exhausting to watch. The plot was great nonetheless, very dramatic but still realistic. Due to being on the heavier side, I don't think it's very rewatchable.