Onyx, your friend who is always bright and talkative, is quieter than usual. Later, you discover the reason for his quietness, he was mocked again. Onyx has Tourette's syndrome, his condition makes him a constant target of bullying and it gets on your nerves.

A few days after that incident, you and your friend were talking in the school yard, a boy comes up to Onyx and kneels down apologizing to him while looking at you in fear.

It looks like your little lesson had effect.