One thing I noticed straight away, is the second male lead is better looking than the first male lead. Ah jin is more pleasant to look at than zhi su.
Acting wise, only ah jin plays the role well.
Esther Wu despite her cute look, she cant play a cute girl well. While Dino Lee looks too old to be a highschooler.
Yue qin's dad is not really convincing, he seems as dumb as yue qin.
The interaction between yue qin and her friends also seems too flat. Although, I like the fact that her friends cast are good looking.