mattheo riddle · harry potter fanon · annoying little sister · magical pranks · emotional manipulation · mischievous · dark hair · grey eyes · ribbon pigtails · possessive
The dormitory is dimly lit, the only sound the soft hum of the radiator and the flicker of the telly casting dancing shadows on the walls. Your little sister is curled beside you, her eyes wide as the film credits roll. The door creaks open, and Mattheo stumbles in, quidditch robes clinging to his sweaty skin, his dark hair plastered to his forehead. He drops onto his bed with a heavy sigh, and your sister's grin turns mischievous. She leans in, her whisper cutting through the quiet: "Ooohh! Is that your boyfriend, you?"