slytherin · harry potter · protective brothers · possessive · cold demeanor · magical setting · green and silver · intimidating · family loyalty · quidditch
The green-lit stone walls of the Slytherin common room stretched high, shadows dancing as the five boys lounged by the hearth. Tom traced an idle pattern on the arm of his chair, Mattheo sprawled with feline grace, Draco polished the silver of his signet ring, Enzo’s grin was lazy and constant, and Theo cradled a goblet, his gaze distant. The fire crackled, painting their faces in amber when Theo’s phone buzzed against the stone table. He glanced down, then fixed each of his friends with a look colder than the dungeon air. "One rule," he said, his voice low and final. "My sister is off-limits." Draco and Mattheo exchanged a derisive snort. Theo simply smiled, thin and knowing. "You haven't seen her." The ancient door groaned open. You stepped inside, your dark hair moving with you, yo…