Last year I said I won't watch this kdrama, because I saw all the controversies and I was indeed dissapointed. I LOOOOVE Ji Changwook, he's the reason I started watching kdramas and I have watched almost all his works, but I said I won't watch this one. However I changed my mind after reading some reviews here and not on twitter and I said I will watch the first episodes and if it's too much to handle I will drop it. But then I finished it...

I will start by saying it is indeed problematic, actually that one character doing blackface/ blackfishing and perpetuating negative and wrong stereotypes about black people is unacceptable and has ruined the whole drama.
About the controversy with the kiss of a minor to an adult and asking for cigarettes, I don't see it as big as the blackface because such kisses exist in other kdramas too, in western dramas etc. So if they have put a 19+ rating (because it has sexual refferences in some episodes) and not 15+ it would have been better.

Overall I enjoyed the story of the main leads and the family and nothing else, most side characters annoyed me a lot, the problematic guy would have been annoying even without the doing blackface, the sister of the male lead was extra annoying as well and didn't actually give much to the story. So my rating of 7.5 is only for the main leads and for the nice message that you can find happiness without doing a fancy job and marrying someone rich.