The Third Evil Sister of Sirius Black (Barty Crouch Jr. Love Story)

*Requested by and dedicated to @HybridWitchWolf *

***I AM AWARE THAT SIRIUS IS BELLATRIX AND NARCISSA'S COUSIN, BUT FOR THE SAKE OF THIS REQUEST THEY ARE SIBLINGS. GET THE FUCK OVER IT!***

Bianca Black is the twin sister of Bellatrix Lestrange, and she's also a Slytherin. This makes Bianca the third evil sister of Sirius Black. This story begins at the trial of Igor Karkaroff, where Bianca has to say goodbye to her long time friend from Hogwarts, Barty Crouch Jr.