Very insightful drama, it really exposed the faults of the micro-society that the school environment established. They did not romanticise mental illness, rather gave insight into how it is truthfully like in real life. I become so attached to these characters! I was bitterly upset about Soo-woo, he is the one who commits suicide and the more you learn about him, the more you wish he stayed alive. The actors/actresses played their roles so well, their characters were completely believable. Sometimes there were irrelevant moments and filler moments. I watched this mostly whilst I was eating. The episodes did not necessarily need to be an hour long but I guess the Korean audience wouldn't mind.