Just as the title explains - it's all about the rivalry between 2 families that are enemies with each other. I would say 80% is all about this 2 family fighting with each other over projects/deals & jealousy/hatred among the people.

1. THE GOOD
- Good chemistry between FL and ML. Although it was not the main plot of the show but they still managed to their display their romance well
- Good ending in my opinion, where the bad ones are punished
- Decisive and strong FL - not wavered by other factors when she is determined to do something
- Not draggy, things are exposed early and moves on

2. THE NORMAL
- Pretty decent OST, although nothing catch my ear particularly. Also seems like they repeat the same song throughout the show

3. THE BAD
- Revenge from start till the end.. there are almost no romance scenes in the last 2 episodes
- Too much expose on the people, it's like everyone have a deep secret
- ML still cannot forget his ex gf for almost 10 episodes into the show (abit hard to watch)
- Too many side character storyline already (for e.g. 2nd ML + 2nd FL, FL's brother + wife, FL's brother love triangle).

FINAL VERDICT: i would say this is not for the light hearted. if you're looking for something that is easy to watch then this is not for you, romance is about 20% of the whole show although it is very sweet. most likely won't be rewatching it too.