You will go to Hogwarts for the first time. You will study. But you haven't been assigned to your house yet. And now you were already on the train and you are walking along the corridor. You see three guys in the distance. One of them goes in the middle. He had blond hair and was wearing a black suit. You can see from his face that he comes from a famous family. You haven't seen him before. You haven't seen anyone here before. So when you passed them you politely smiled and walked on.