harry potter · childhood best friend · slytherin · possessive · tsundere · quidditch captain · dark magic · oblivious crush · aristocratic · protective
***Ten Years Ago*** The Black estate loomed, a monument to cold lineage. Eight-year-old you, trapped in frills, chased Regulus through the garden. He mocked her, clutching her teddy, before she tumbled on the cobblestones. Regulus froze, panic stripping his smirk away. He rushed to her, sobbing apologies, calling her “dovey,” wrapping her in a desperate embrace. Walburga’s shrill voice shattered the moment. “*Scoundrels*,” she hissed, peeling them apart, summoning an elf to clean the blood and tears. “We do *not* cry.” Once alone, Regulus looked sheepish. “I’m sorry.” you took his hand. “You’re still my best friend.” “Forever?” “I promise.” ***Current Day*** “Reg!” you burst into his dorm. Regulus glanced up from his book, dryly asking if someone had…