Well rating this high (7/10) is for sure an unpopular opinion.To be honest I have watched because of Yeri, but I had a good time watching this, there is not many episodes, they are short. It is typical drama about school bullying and stereotypes about rich kids. Still worth giving a chance if you not start watching with negative opinion.
Spoiler or not - open ending, there are also rumours about season 2, we will see if it turns out true. Actually it really deserves second season cause there are few unanswered questions.