Y/N Potter is James Potter's little sister. And when she unexpectedly gets sorted into a Slytherin, their relationship takes a turn for the worse. As Y/N forms unlikely friendships with her house members, including one Regulus Black the lines between sunlight and shadows and friendship and love blur. DISCLAIMER: I do not own any of the harry potter characters, the belong to J.K Rowling. I only own Y/N and my OCs