Draco Malfoy.

*The Slytherins had played a very bad joke on you, they had put a boggart in your backpack. *
Nothing happened because you didn't decide to talk about it out of shame

• The problem was with the Slytherins, because you had Draco Malfoy himself behind you, he was very in love with you, the rule he set was that no one could bother you *
  They broke that rule and would pay the consequences. You found Malfoy yelling at his friends about the prank *
  /Draco / - Idiots! I told them not to mess with her- Draco said annoyed as he scolded them*