I have seen all 3 seasons. It is a series that leaves you in suspense, eagerly waiting to see what happens in the next episode. Actors play exceptionally well.
Watching the first episode, I didn't understand anything, initially I wanted to stop watching, but it left me with many questions which answers were given to me along the way.
When Min Seol-a died, it really made me think that Dan-te and Seo-jin killed her, but no, Yoon-hee did it, I understood that he didn't do it on purpose, but if I were Suryeon, I wouldn't have been able to forgive her, but chose to lie to me all this time...
Then Logan it was sports teacher Ho-Dong (he was the only teacher who didn't annoy me).I think Du-ki made me hate the Hwayeong Middle School I can't forgive him.
All the adults in Hera Place who died have been revived, but Min Seol-a when? I still had hope that she would appear...Then dying one by one AGAIN, I dashed my hopes. I thought it would have a happy ending where Dan-te and Seo-jin would go to prison, their children and all the other children who were a bully to correct their mistakes. Ro-na and Seok-Hoon be happy, Min Seol reappear and live with Su-ryeon...