I love Shin Min Ah, as well as Kim Young Dae, so I was very excited for this one. I was so disappointed. There were too many storylines going on for 12 episodes, but I'm glad there weren't 16 episodes because it was all I could do to finish this.

What I liked:
The second couple. They were so cute together, as well as in the scenes that they had separately.
Kim Young Dae's character, even with the bad haircuts.

What I didn't care for:
-Hae Yeong (Shin Min Ah's character). I was totally getting narcissist vibes from the character at the beginning, which didn't lessen as the show progressed. She was not nice to the ML throughout. I know some had said that she had a right, because of her mother, but I'm not buying that. Sometimes a character redeems herself. This one didn't, as far as I'm concerned.
-Bad kisses by the leads.
-3FL multiple sexual partners, one of whom wasn't exclusive to her either. The latest catchphrase seems to be polyamorous, but a different word comes to mind. Accidental pregnancy, not knowing who the father is. This whole storyline could have been left out and made the show more cohesive.
-Multiple storylines that went nowhere. What happened to 2ML's mom and dad? They had such a big story at the beginning, and it just fell off. What was the point of the 2ML's secretary? He was just irritating throughout.
-All of the sex chatter by the FL which demonstrates that she's had multiple partners. Personally, that really decreases my enjoyment of a "romance".
-The sex talk, the profanity, the sexual innuendos - for me, this was all very off-putting. I have been watching K-dramas to get away from all this stuff.

Again, this is just my personal preference, but considering that I love to binge-watch shows, I could only manage one episode a day and was reluctant to continue thereafter. I just found too much unlikeable about it.