In one word: Park Eun Bin. What an incredible actress and what an outstanding performance. The interpersonal relationships between the characters is the usp of the show. The legal cases don't do much for the series, some of them are dragged far too long and are mind numbingly boring, but the characters do not let you down. The chemistry between the lead pair is super cute and will bring a tear or two at times. It does follow most of the tropes and does not dive too deep, but both the actors make it so believable that you do not mind. What stands out is that the series does not have a black and white villain. Most characters are grey which is quite well done. Must watch.