The MSBY Black Jackals gym was filled with chaos and laughter that morning—at least for everyone except Bokuto, who nearly ruined the surprise three different times. It was the Miya twins’ birthday, and the whole team had spent the last two hours decorating the place from top to bottom. Confetti, balloons, a mountain of food (mostly from Osamu’s Onigiri Miya stand), and a massive banner stretched across the wall.
It read: "HAPPY BIRTHDAY ATSUMU (who always likes to show his annoyingly biceps and abs to his wife and annoyingly twin brother Osamu) AND HAPPY BIRTHDAY OSAMU!"
And beneath that banner? Two photos. A normal, handsome photo of Osamu—and an absolutely ridiculous one of Atsumu mid-sneeze, eyes half-closed, hair sticking out in every direction.
“Oi, Hinata! That’s perfect, right?!” Bokuto laughed, slapping his knee as he admired their handiwork.
“Yeah, yeah!” Hinata beamed, giving a thumbs-up. “He’s gonna die when he sees this!”
Sakusa sighed quietly, his arms crossed. “Let’s just hope he doesn’t actually die. I don’t want Miya Atsumu’s dramatic screams echoing in my head for the rest of the week.”
Meian chuckled from behind them, adjusting the string lights. “You all better be ready for him to throw a fit. But—” he smirked, “it’s worth it.”
The plan was simple: Hinata had asked Osamu to bring some of his onigiri for "lunch at the gym." Osamu, ever the helpful twin, agreed—dragging a suspiciously reluctant Atsumu along.
“Seriously, Hinata-kun,” Osamu had said earlier on the phone, “ya sure ya want this guy comin’? He’s just gonna yap about how good he looks in his jersey again.”
“Of course!” Hinata had replied innocently. “We’d never leave Atsumu out!”
Now, everyone waited behind the stacks of gym equipment, lights dimmed, the only illumination coming from the soft glow of the decorations. Bokuto was already bouncing on his toes, whispering, “Can I yell now? How about now?”
“Not yet!” Sakusa hissed.
Then, the sound of the gym doors sliding open.
“Oi, Shōyō, I brought the food!” Osamu’s voice echoed, casual and unaware. “And look who I dragged along! This idiot—”
Atsumu interrupted, “Stop complainin’! I know ya love seein’ me, ‘Samu. Yer life would be borin’ without me!”
The lights flicked on—
“HAPPY BIRTHDAY ATSUMU AND OSAMU!”
Confetti exploded. Bokuto yelled loudest, Hinata jumped in excitement, and even Sakusa clapped lightly.
The twins froze.
Osamu blinked. “...Wait. What—?”
Atsumu’s jaw dropped as he stared at the banner. “...What the hell is that?!”
Bokuto laughed so hard he nearly fell over. “Read it out loud, Atsumu-kun!”
Atsumu’s eyes darted up the banner, his face turning redder with every word until he shouted, “WHO WROTE THIS?! WHO SAID I—WHO SAID I SHOW MY BICEPS AND ABS TO MY WIFE?!”
Hinata grinned mischievously. “You do it every day, Atsumu-san! You literally lifted your shirt at breakfast last time!”
“IT WAS HOT, OKAY?!” Atsumu sputtered, face beet red as the team howled in laughter.
Meanwhile, Osamu just smirked and crossed his arms. “Well, at least my photo looks normal. Can’t say the same fer yers, twin.”
“WHO PICKED THAT PHOTO?!” Atsumu screeched again.
Bokuto proudly raised his hand. “I DID! You look so natural!”
Everyone burst into laughter again, and even Osamu was grinning from ear to ear.
But amidst the chaos, Hinata suddenly paused, glancing around. “Hey, wait... where’s {{user}}-chan?”
Sakusa frowned. “She was supposed to be here already, wasn’t she?”
Bokuto gasped dramatically. “Maybe she got lost in the balloons!”
Hinata tilted his head. “...Or maybe—”
His eyes widened as he spotted something across the gym. Over near the far wall, sitting cross-legged on the floor, was {{user}}-chan—completely absorbed in eating from a tray of onigiri. Not just any onigiri—the ones from Osamu’s stand, meant for everyone.
“Oi!” Hinata whispered, elbowing Sakusa. “There she is!”
The whole team turned.
{{user}}-chan froze mid-bite, cheeks puffed like a chipmunk as the team stared. A mountain of half-eaten onigiri sat beside her, she glared fiercely from across the gym.