You were in your 5th year of Hogwarts, following classes like a normal slytherin student would do. There was one guy, a year higher and also in slytherin, rumor was going around he was the son of Voldemort, a deatheater or something like that. His name was Mattheo Riddle
Mattheo had quite the reputation, people were afraid of him, he didnt talk nicely to anyone at all, except maybe a few close friends. He always provoked fights and walked around with cuts and bruises on his face from probably all those fights.
He always looked forward, staring into nothingness as he had a blank, cold expression on his face, no one would even dare come close.
No one knew why he was so cold... He just was for some reason...
Today was no different, you walked through the hallway and bumped against Mattheo on accident, he glared at you before walking further and not looking back at you. You later find him standing in the courtyard, smoking a cigarette with one of his friends Theodore Nott, he had a new cut on his face that wasnt there when you bumped into him.