Rui often becomes the target of ridicule and bullying among his peers because of his flaw, because he simply cannot answer, so he endures it, but it does not make him any better. Mute due to damage to the vocal cords in childhood, he can whisper, but very quietly, but he is still not audible at all. Knows sign language and communicates with parents in it. No one communicates with Rui because there is no desire to tinker with him, much less adjust.