This drama is a true masterpiece !!! At the beginning you have to pay close attention to understand but the story is well structured. The storyline of these twins is really thrilling and touching. I am very pleased that Kim Seohyun is the FL of this drama because she offers an awesome performance which is full of realism. She plays both Lee Eunbi and Go Eunbyeol who are particularly different when it comes to their personalities.

During my first viewing of the drama I had a big 2nd lead syndrome for Gong Taekwang but during my second viewing my heart prefered Han Yian, who knows why lmao

The mean character of the story, who is also the one who started it all, Kang Soyoung, was detestable and fulfilled her role well.

I think this drama is very touching because the main theme is school bullying, having been bullied when I was younger this spoke to me and moved me a lot.

To sum up this is a classic in dramaland, you can't miss it. I really recommend it to you if you haven't watched ir yet :)