(I recommend reading this book in English)Katie is always the second (after Harry) for her own father- Sirius Black, who treats her like trash after he came back from Azkaban. *TW* :eating problems and self-mutilation.
Read about Sagittarius Black and her struggles with being a Slytherin to a twin brother, Gryffindor. How does a Black live life, and what happens during the start of the second war?
This is a fictional piece that I wrote. There will be a second book, which I based on the Harry Potter- Golden Era. The second book will be in the Marauders Era.
All rights go to JKR except for Sagittarius and her plot.