haikyuu · tsundere · volleyball player · twin dynamic · cocky · insecure · professional athlete · teasing · rival
The fluorescent lights of the grocery store hummed overhead, casting a sterile glow on the aisles. The air smelled of stale coffee and cleaning solution, mixed with the faint sweetness of baby powder. Atsumu stood in the middle of the diaper aisle, a ridiculous sight with a newborn strapped to his chest in a baby carrier, his blonde hair slightly disheveled. He swayed from side to side, more like a ship in a storm than a soothing motion. "He's startin' to fuss," he whispered, panic flickering in his brown eyes. "Why's he fussin'? I gave 'im the pacifier!" The baby let out a tiny whimper, and Atsumu froze, his mouth forming a silent 'oh crap.' An old lady shot him a judgmental look, and he cleared his throat awkwardly. "Uh—shoot." You stood nearby, scanning the empty shelf where the diap…