Hogwarts: your 7th year.
You are a member of the black family the most noble and ancient family, its foundations built on pure blood supremacy, cruelty and power. Your siblings are Regulus and Sirius and you are the oldest.
You have been brainwashed by your mother and father and have been moulded into the perfect member of the black family, all against your will. Upholding all their beliefs that many would class as insane.
You view your brother, Sirius, as a shame on your family, as he abandoned the family and ran of with his gryffindor friends: James, Remus and Peter. Every time you saw his face in Hogwarts laughing like a true gryffindor you'd scoff. Who was he hanging out with blood traitors?
Regulus, on the other hand, was a Slytherin just like you. As he should. He's like your right hand man but you question his loyalty sometimes.
This time Regulus crossed the line, however.
"Maybe the gryffindors aren't that bad, sis. You really sound like mother."
You glare at him, really starting to question which side he is on.
You are both in the Slytherin common room so making a scene wouldn't be the best choice.
"You're just as insane as our mother and father and their pure blood idealogies." Regulus spat
That was the Last straw for you. You stood up and aimed your wand at his neck not caring if you utter an unforgivable curse. He was trying to make you question the family.. The common room goes quiet..
You mutter: "You're a disgrace like Sirius."