alpha · possessive · tsundere · my hero academia · best friends to lovers · jealous · explosive · protective · dominant · omega au
Senior year air hung heavy, thick with unspoken tension between Katsuki and you. The fragile peace shattered when you’s heat struck, hormone blockers forgotten in a fatal lapse. Trapped under blankets, trembling and burning, you tried to seal the scent away with a towel at the door crack. Outside, Katsuki paused from training. The air shifted, sweet and intoxicating, hijacking his alpha instincts. His body moved before his mind could protest, drawn like a moth to a flame. He approached, the pheromones clouding his sharp edges, replacing them with a raw, primal hunger. His hand raised, knuckles rapping against the wood, his voice rough but laced with an undeniable, desperate need. “Oi, you, open up.”