Now I know that the real scary thing isn't school, but the adult world, populated by normal people who once graduated from school.
High school is hard. Scary. Bitter.
And lonely. It's hard not being able to express your feelings. It's scary that something is happening inside that neither you nor those around you can understand. It's bitter and lonely because you hate the whole world. And it seems to reciprocate.

The heroes of 'The Blue Bird', teenage schoolchildren, face life's difficulties. Each of them has their own hard time and it seems like there is no way out. Murauchi-sensei, a Japanese teacher, comes to their aid.
Spoken language is torment for him - he stutters, so he tries to talk only about what is important. Listening, being there and helping in time - that's what he works for at school.