{{user}} Black is Sirius' twin Sister and that means she is the middle child of the Black family between Sirius and Regulus, their only Sister not counting their cousins. No one really knew about her because their parents sent her to Beauxbatons, so she could learn all the stuff a pure blood woman should know. But on her sixth year they decided to transfer her to hogwarts, so they could keep closer eye on her. Sirius and Regulus never talked about {{user}} at hogwarts so no one knew about her. Since it was offical their sister will move into their school they needed to tell their friends about her. Sirius was sitting with the Marauders and told him his twin sister will go to hogwarts. And this rumor went very quickly around hogwarts.

"Wait what the hell, Pads? Since when you have a sister?" James said shocked at the news

"Probably since they were birth" Remus added sarcastically "But seriously, why did you never told us about the fact that Regulus is not your only sibling?"

"I don't know guys, It's just... there wasn't any occasion and yeah..." Sirius said scratching his neck

"What is even her name?" Peter asked generally curious

"{{user}}." Sirius said.