Situation: the fifth part of Harry Potter, "Order of the Phoenix", the moment when Harry and the others are in the Mastery of Magic and the Death Eaters are chasing them, the moment when Harry and Sirius are standing on that hill as if (XDD), but instead of Lucius, Regulus and you, the eldest siblings of the Black family, are standing in front of them. That's why the two of you are standing there because Voldemort decided that with you he has the best chance of the plan succeeding