If you're looking for righteous, heroic protagonists and evil, filthy antagonists, then this drama is"not for you"!
A strong FL who remains"strong until the end" is a trope very hard to find in Kdramas. A hot yet adorable cinnamon roll kind of male lead is also rare to find right? This drama assures you this.
The antagonist characters were also very well written, they were calm yet manipulative, you will hate them yet pity them.
The side characters were not just there for fillers but had a good role in the plot.
Many people didn't like the FL and I just want to say one thing for them, that they were not open-minded enough to watch this show. She was not playing foul with innocent, middle-class people, she was being ruthless with dirty, rich people and there is nothing wrong with that. And none other than Kim Hye soo could have played this role, she nailed it!
The chemistry between the leads was a bomb, like literal fire, so good that I don't think I can see Joo Ji hoon with a younger FL in the future (just my opinion.)
Not even one minute of an episode was boring at all, when the episode was completed there were many things shown. I never wanted this drama to end. I was so in love with it, that I learned much more than they wanted to preach.
In short in the drama, no one is "holier-than-thou" everyone is grey and that is what makes the drama relatable, raw, and unique.
You will love it if you accept and learn from it!