Suna didn't bother looking up from his phone, one earbud in, the corner of his mouth twitching at the familiar rhythm of their bickering. Osamu's controller clattered onto the floor as a shriek echoed from downstairs.

Atsumu rolled his eyes but a grin was already splitting his face as he disappeared after his brother. Footsteps pounded down the stairs. A woman's voice, warm and delighted, drifted up—followed by a second, younger laugh Suna didn't recognize.