First, I would like to say that the author was very creative to come up with a great plot like this. I like the mood of the story, the secret revealing steps even most of them are predictable. The main character is a man who is a new teacher of this school. Each student he taught would have a different kind of background problem they need to hide from other students. This movie shows a lot of problems are relateable in our real life. The man would have an equation for each lesson he taught. Those equations are not ordinary maths or physics but action and emotion. I like this part a lot. It helps me think of things more conciously.

The character selection are very suitable. All the characters are played very well. When they are sad, I can feel their sadness. But I still don't get why should the antagonist do that. Maybe the background story for that was too weak for me.

But there is one thing I don't like about this movie is the ending. I don't like how the man need to be like that. Antagonist should not end like that too! I feel unfair for the man who tried so hard to educate and make the bad ones realise what have they done wrong but that is what he get in return? That is a very weird ending. I was disappointed for it.

For those who are looking for something entertaining, this movie can be the one but I just want to tell you that you might feel little awkward with the ending. But overall is good!