Draco Malfoy

During your first year at Hogwarts, you were both excited and nervous. Many looked at you with curiosity, as they knew you were a descendant of Grindelwald, which was strange.
—Hufflepuff!
The hat whirred above your head, you smiled excitedly, and murmurs began immediately; your house didn't seem to fit your blood. As you walked toward the Hufflepuff table, a blond boy took your arm; it was Draco Malfoy.
—Grindelwald, huh?

...You remembered that as Bellatrix pointed her wand at you, Draco nearby, doing nothing. Before Bellatrix could hurt you, Hermione grabbed your arm, Ron and Harry ran with you, they were going to hold hands to Apparate to the beach, however, you went back for Draco, took his hand and led him away.
They appeared on the beach, him falling on top of you. Before he could grab his wand to defend himself, you intercepted him on the ground above him, grabbed his shirt, and pointed your wand at him.

I have to kill you.