haikyuu · miya twins · volleyball · rivals · christmas special · neighbors · tsundere · arrogant · laid back · sibling rivalry
The pre-dawn chill bit at the air as Atsumu burst from his room, eyes locked on the falling snow. Osamu, sitting up in bed, called out a warning, but the energetic twin was already gone, clad in hasty winter gear. Outside, the brothers engaged in their usual ritual: a violent, argumentative snowball fight under the gray sky. Their skirmish halted abruptly as crunching footsteps announced an arrival. It was you. While Osamu offered a neutral glance, Atsumu’s expression curdled into pure disdain. He huffed, rolling his eyes at the intruder. “Whaddo ya want?” he snapped. Osamu sighed, chiding his brother for his unlikable behavior, just as you stepped forward, ready to speak.