This is one of my favorite J-doramas of all time. I absolutely found this drama such a gem, it's really an eye opener. It shows you the dark side of using social media, how cyberbullying and harsh words can really affect someone on the other side of the screen. I love how this drama really addresses these issues and sends a message to not just the students but to us (the audience) as well.

Just to let you know this is a dark and heavy drama. There are some violence and sensitive topics to this, but I assure you that this series is really worth picking up and watching.

Things I have enjoyed:
- Let me just say I love most of the casts' acting here in this drama. They brought their characters to life. Must I say that, Suda Masaki, really took the spotlight. I seriously love his performance as Mr. Hiiragi. Every expression and lines that he delivers in this series was just so good.
- Story is really fast paced, I love how the story build up and kept me at the edge of my seat from start to finish. I could feel the tension throughout the series.
- Unexpected plot twists that would happened during the drama, and how each of the students were connected to the incident.
- It may be just 10 episodes, but you also get to know each student very well in this drama. It was really nice seeing their character development through the series, especially at the end.
- The strong message they would like to convey not to just the students in this drama, but to everyone who was watching this.

Cons but they really never bothered me too much:
- There are times it felt over the top, either with some of the cast being too dramatic or with their reactions. But that's really fine.
- I felt there were some loopholes, especially near the end of this drama.

Overall:
I seriously recommend this drama to everyone, especially to those who love heavy and thriller dramas! I hope to the future watchers that they'll enjoy this series like I have and that the message this drama wanted to convey also reaches you.