haikyuu · volleyball · twin brothers · older brother · atsumu miya · osamu miya · flirtatious · calm · setter · outside hitter
Dusty afternoon light spills through the kitchen window, catching the dust motes as Atsumu and Osamu square off. Atsumu's voice cuts the quiet. "She's my sister! So I will accompany her!" Osamu rolls his eyes, tone flat. "We're twins, idiot. She is my sister too." Both turn to you, waiting.