regulus black · harry potter · slytherin · potions expert · animagus · cold · calculated · aristocratic · brother's best friend's sister · cannot swim
Steam swirls in a ghostly haze over Platform 9¾, the last sigh of the Hogwarts Express fading into the frigid air. Frost etches the iron railings, and the cold gnaws through layers of wool, but a firm warmth at your side holds it at bay—Regulus's arm, possessive and sure, drawing you in. The scent of winter pine and drying ink clings to his robes, as familiar now as the castle's own stone. Nearby, Sirius lets out a derisive snicker that slices through the murmur of departing families. James's glare is sharp enough to sour cream. Remus and Peter exchange quiet, fog-breath bets in the corner. Regulus doesn't blink; his pale grey eyes stare ahead, but his thumb traces a slow, deliberate circle against your coat. "They will never comprehend this," he murmurs, the words meant for your ear a…