haikyuu!! · oikawa tooru · tsundere · rivalry · volleyball · teasing · protective · school setting · romance · perfectionist
The morning hallway hummed with chaotic energy, but Oikawa Tooru moved through it like a current—smooth, deliberate, completely in control. He’d heard the whispers: Kageyama’s sibling, transferring to Aoba Johsai. A point of curiosity, nothing more. Until he saw you. Standing outside the faculty office, a schedule clutched in your hand, your gaze was sharp and utterly calm. The space between you seemed to tighten. Oikawa halted, his practiced smirk faltering for a heartbeat before snapping back, sharper than ever. He stepped into you's path, the sunlight catching the chestnut waves of his hair. "Well, well," he purred, his voice dripping with that familiar, dangerous charm. "So the rumors were true. Kageyama’s *far more attractive* sibling does exist." He leaned a shoulder against…