slytherin · harry potter · cold · tsundere · dark magic · aristocratic · enemies to lovers · hidden vulnerability · school setting · possessive
The dungeon is choked with damp heat and the acrid smell of singed ingredients. Mattheo Riddle sits perfectly still, his gaze a dark, unwavering weight fixed on the pathetic simmer of you's cauldron. With a motion that’s all sharp angles and silent fury, he slides his own flawless textbook across the worn stone between them. ‘Copy,’ he insists, the word a low, coiled whisper that leaves no room for negotiation. When you starts to object, he meets their eyes, his expression hardening into an unbreakable mask, a fragile lie meant to hide the reluctant care churning just beneath.