●This movie was a pretty dark and intense movie. It addresses issues of bullying, suicide, depression, S.Korean filmmakers are masters in creating such dark movies. But don’t take it in another manner, it is not talking about anti-bullying or suicide prevention, it goes ahead with the kid's trauma or more say psychological behavior where they lack care and think of suicide. it was more like aftereffects of an accident that pushed a girl to think of proving her innocence by taking her own life.

●I was surprised to see that it won so many awards because I felt there were some plot holes and loose ends. I really didn’t get why were these bits there.
1. A random student saying she wanted Kyung Min to die.
2. Come back the message in sign language, when it was decrypted it didn’t give any significance, it was just there intensifying the scene because no one understood except the audience.
3. The school girl implicating homeroom teacher.
4. Mother sits in the investigation process and also in statement recording of the witness. That really incorrect.
5. The homeroom teacher's behavior was very bad, he lacked compassion and there is no way to treat students with beatings.

●The movie had an open ending and it depends on the viewer's speculation. I felt like Kyung Min, lacked parental care and might have depression. Or her mother might have done something to her which lead her to take such a step. Or she might have been bullied in school.
●Young Hee's preferences might be one reason she had death thought because we know that society is unacceptable to new things.
●The acting was intense by the lead and being 28-year-old Jeon Yeo been as Young-hee just nailed it. she played well with her expressions without the dialogues. there are many dark dialogues she spoke which kind of gives a heavy blow in the heart.
Seo Young Hwa as Kyoung min's mom seemed like an adult bully who lost her child. and desperately wants her kid to be remembered. she performed finely showing the emotions of the mother.