Story is really simple, Guy likes girl but someone from his family have done something bad to the girl so her can't date her. Most of the dra revolves around the FL, it is actually her story, the other people are there as supporting characters, even the main ones.

First 8-9 episodes had good comedy, romance and the social issues raised. Later it was just repeated things happening like first someone will come with a case, the FL will take it, will make some mistake, ask for ML's help and he will help them reluctantly.

Now about the characters, FL: The is the best part of this drama, she is really cool, smart, beautiful, hot, strong but also have weakness, ready to help, really funny, admits mistake, isn't ashamed to ask for other's help. But sometimes it felt she was doing too much i.e exaggeration of what actually should be done.
ML: He doesn't have any actual aim or goals, everything he does is because of the FL. His whole life revolves around her, He is a "yes man" when it comes to the FL, he may oppose or disagree with her but later he just goes along with her. In later half is seems kind of a pathetic character, whoes only function is to make the FL shine. In honest opinion he is actually the Main Supporting Character not a main character.
The bad guy: No personality, acts like a 5yr old kid, no good motivation.
Supporting Characters: Well they are just supporting, some might have some kind of story in initial episodes but that's it, later they are there just to react to whatever the leads do, mainly the FL.

Cast: Talented and amazing actors, specially the female actor LSY, she is amazing, every scene of her you will find how amazing of an actor she is. LSG, it felt like he was just there for timepass, he had some good scenes to show his acting but most of the time it felt really off.

Genres: It had romance, comedy, slice of life and some thrill too.
Romance: Leads have good chemistry between them, but the romance was exaggerated after they got together. Till episode 8 it's really fun to watch them together.
Comedy: Comedy is actually good throughout the drama. It may be felt off for few moments but over all it was good, not very good.
SoL: You will find this in the first half, it is good and simple. Later the show is more about the FL and the guy she is up against.
Thrill: It is minute so not that much to talk.

Overall: It is a drama where it will take you 2-3 episodes to adjust, then a fun ride till episode 8-9, later it is repeating and boring with many filler episodes.

Note: The portrayal of ML may not be liked by Male audience, as it shows him nothing but a guy having his life revolves around the FL and not having any concept of self.

Critics Rating: 7
My rating as a casual viewer: 8