Someone in some thread here mentioned Perfect and Casual so, of course, I had to check it out. This is just me but I am so annoyed at the FL and her whining, especially during the first few episodes. UGH! IMO, the way she speaks her native tongue when she is in one of her ‘whine modes’ drives me crazy. I’m not fond of actors who mumble their lines, I guess. (I will cut her some slack and say that she is playing a college student, but still…). I’d like to think that I am not judgmental and can usually accept most dramas even if there are huge holes in the plot, etc., but the way the director is having the FL act/deliver her lines is almost too much for this kid (me). 
I’m going to try to gut it out and get through it primarily because I really like the ML, Miles Wei.
https://mydramalist.com/54889-mr-perfect-and-miss-almost
Edit: I am seriously going to have a VERY difficult time getting through this one. I really, really don’t like the FL. She acts like a bimbo, talks like she’s got a mouthful of cottage cheese, is the queen of whiners, etc., etc., etc. I think I could handle this drama a little better with a different actress? I would like to think I’m not shallow but this chick is not doing it for me as far as being an appropriate match for the ML. She is portraying her character as extremely immature but of course the director and writer(s) should get some credit for that too. I would not recommend this drama to anyone and will be sure NOT to watch anything else she appears in. It is painful to watch her.