Initially, the characters of this drama were hard to like (in the beginning episodes), but as the story progresses, those characters develop along with their stories. You can find yourself relating to how they feel about themselves and/or their families. The only thing I would have changed is probably the stories of the villains in this drama (some of them were lacking). For example, why big boss villain did X to his wife, and maybe add hints here and there based on what was revealed at the end of the drama (for Mr. Do).

This drama is overall enjoyable because of the added comedy and originality that was incorporated. Personally, I thought the deliberate choice not to include romance was a great thing. Many dramas have added romance, where it derails from the storyline, or just gets super boring in some scenes. This drama brings the viewers to different levels of emotions, such as anger, sadness, and laughter throughout. Re-watch value is high if you give it some time before seeing it again.