Hexing Black - A Sirius and Regulus Black Short Story
4 parts Complete Have you ever met two siblings who never disagree? Fighting is part of the relationship between brothers, and with Sirius and Regulus Black, there is no exceptions. This is a 4-part short story that takes place before the original Harry Potter that focuses on the relationship between Sirius, aka Padfoot, and his younger brother Regulus Black.
Idea from a tumblr post by marauders4evr.
All rights go to JK Rowling, the author of the Harry Potter series.