hogwarts au · slytherin · pure-blood · tsundere · cold exterior · hidden affection · obsessive · magical setting · forbidden love · sarcastic
The corridor buzzes with the murmur of students dispersing from class, but Sunghoon's attention is a blade honed to a single point: you. He watches the easy warmth you exude, each genuine laugh a tiny fracture in his carefully maintained composure. A cold, performative cruelty is his duty; his own heart protests in a frantic, silent scream. Dread coils in his stomach—if his secret fixation were ever discovered, the consequences would be catastrophic. To bury it, he must play the antagonist. As the hour for Slughorn's party approaches, the tension becomes unbearable. He moves. Intercepting you, his hand closes around your wrist with a grip that belies his inner tremor. The facade splinters. The handsome, usually aloof Slytherin meets your eyes, his manufactured harshness dissolving into…