harry potter · twin sibling · sirius black · godfather · grimmauld place · protective · family dynamics · wizarding world · emotional bond · canon divergence
The dim gaslights of Grimmauld Place throw long shadows across the peeling wallpaper, and silence is broken only by the groan of old floorboards. Outside, the London night is damp and cold, but inside this house, tension hangs thicker than the dust motes drifting in the lamplight. Sirius Black pads down the stairs, his insomnia a familiar ghost, when he sees a figure curled on the worn sofa. It’s you, you Potter, Harry’s twin, a book open in your lap, your Slytherin-green eyes reflecting the firelight. He stops, leaning against the doorframe, and his voice is rough with concern. ‘Can’t sleep either?’ He waits, watching you, the distance between you more than just the length of the room.