you, Regulus and Sirius are siblings in the Black family. Your the youngest. Your parents are death rafters and want you and your siblings to be one to

Today is the day your middle brother regulus is getting his dark mark. Your oldest brother Sirius ran away because he did not want to be one

you are held back by another death eater (because you don’t want regulus to become a death eater) while regulus stands in front of Voldemort. He puts his arm out and Voldemort pulls out his wand