Chapter Text
He never really cared much about anything, aside from his phone, volleyball, and sleep.
Even when rumors of him and Osamu are dating, they didn't even bothered correcting them and even tried to play around a bit with some fan service. That means nothing though, they're bros. Even if seeing Osamu's face is more than sometimes equivalent to seeing Atsumu's.
He didn't cared when a girl confessed to him before, telling him how she had been in love with him since their 3rd year middle school only for him to reject her by dropping the bomb fact that he doesn't remember her.
But when a girl appeared at the doorstep of the gym one day during their morning practice with two letters in hand, he was unusually curious. Especially so since she looked like she wants nothing more than to walk away from the gym and to never step a foot in there again.
"Oh, Ayumu!" he remembered Ojiro waving at her as he approached, "What brings you here?" he asked, eyeing the letter in her hand.
The girl, whose eyes seemed familliar, gave them a simple bow of her head as a greeting before speaking in a soft manner. "Dumb and dumber are sick, I'm here to just tell you that." she simply replied.
He almost choked a laugh by hearing the words dumb and dumber, he didn't even need an explanation to know who she was referring to but it did got him curious as to what's this girl's relation with the twins.
The girl left just as quick as she appeared.
He can tell that she's a first year based on the pin on her necktie, but that fact only made him curious even further. Thankfully, it's not only him who was curious about the visitor as it was Akagi who actually walked up to their ace and asked the question everyone have in their minds at the moment.
"Who was that?" the libero asked.
Ojiro turned his attention from the ball to the libero and cocked a brow, "The twin's youngest sister, Ayumu." he answered.
Now that was a surprise.
Neither of the twins had told anyone about another sibling, Ojiro only knows her because he had known the Miyas since 4th grade in elementary school.
Two days of peace and solitude without the rowdy and obnoxious twins around, they finally kicked their way back.
Kita prohibited them from practice until next week in order to avoid them getting sick again, they didn't liked the idea but they're just ants compared to the captain's cold logic anyways and ended up being the club's ball boys.
"So," he started when their homeroom ended, he nudged Osamu who's seated on his left. "A sister?" he asked.
The twin visibly grimaced, though his expression remained just as deadpanned as usual. He didn't even bothered to turn to him, his eyes just remained glue at the sight outside their classroom window.
"What about it?"
Suna raised an eyebrow at the sour reply, "You never told us you have one, Ojiro-san did." he said, leaning on his elbow to keep facing the wing spiker.
"Why do we have to? It's like telling someone 'oh we have parents'." Osamu rolled his eyes.
"That's kinda not in the same page." he deadpanned at his logic but Osamu just shrugged it off.
"Why do you care about whether we have another sibling anyway? It's not like we're gonna let you meet her."
Suna let a lazy grin on his face, "Dunno, she's cute." he said, almost barking out laughing when Osamu turned to his direction with a frown.
"Don't even think about it." he hissed.
"Oh? Sis-con?" he snickered.
Their conversation was cut there when the teacher finally arrived, Osamu acted all annoyed at him even after practice until he treated him to some meat buns.
After that, he and the other 2nd years regulars often met the newly-introduced sister a few times along the hallways or spot the girl anywhere around the school all by herself.
Suna already guessed that things between the twins and their sister aren't the best but he didn't expected it to be this bad. The three never did spoke a word to each other even if they clearly saw or passed by one another, the twins would often frown or scowl when a teammate even brought the topic of sister up.
Gin and him mostly witness the scene and would share looks of confusion but neither of them brought it up. The twins clearly doesn't like talking about her and they don't want to deal with a foul-mood Atsumu when his regular attitude is already foul to the bone.
One day though, when they decided to eat up in the roof for lunch, except Atsumu who's retaking an exam he failed, Osamu suddenly decided it's a good time to talk about it.
"I know you guys feel awkward about how we interact with our sister, sorry 'bout that." he said out of nowhere, almost choking Ginjima on the rice ball he was eating.
Suna though, he just snorted. "You mean the 'lack of interaction'?" he asked, earning a roll of eyes from the wing spiker twin.
"That's just how we are." Osamu said.
"Even back at home?" Suna pry, earning a look from Ginjima who's telling him to shut up.
"Yes, even at home." Osamu deadpanned, not looking offended at all. "You can ask, it's not like we keep it as a secret." he sighed.
"Oh?" Suna raised an eyebrow at him, "So? Why do you act like strangers?" he asked not holding back at all.
Osamu stared at him for a moment and he just wriggled his brows at the twin. "You don't really hold back, do you?" he asked.
"Just answer the damn question, Miya." Suna waved, "Don't you know how weird it is to watch you siblings have this sort of tension, I feel like any wrong move and you're out to kill each other." he explained with furrowed brows.
"Yeah, I also get that kinda feeling around when you three meet." Gin agreed, putting down his food to take a sip of his drink. "Like you three walks on eggshell."
Osamu looked away, a small frown on his face. "We weren't like that before." he said.
Gin and Suna just shared a look but said nothing to let the wing spiker continue.
"We used to be close like normal siblings are."
"What happened then? Was it because you twins are obnoxious?" the middle blocker snorted, earning a weak glare from Osamu.
"You're making it harder to tell." he said.
"I'm trying to make it easier but sure."
Osamu just shook his head, "Long story short, things changed when she got into a big accident when we were in 5th grade and she was in 4th." he said.
Okay, that does caught Suna off guard, that the piece of meatball between his chopstick rolled on the ground.
I mean, who would've thought that the obnoxious twins actually have this kinda tragic background story regarding their family? No one.
"You don't have to force it out, we won't pry anymore." Gin apologetically said but Osamu just waved.
"Nah, it's years ago. It doesn't bother me anymore." he said but they can tell it still does. "Besides, I think it'll be better if I let it out for a bit." he let a sad smile on and stared at the ground.
Suna shifted in his seat, "Let it out on us? Why not to Atsumu?" he asked.
"That idiot hates talking about it." is Osamu's simple reply. "Probably because he blamed himself about the accident."
Silence fell on them after that, Gin warily looking around with the heavy atmosphere while Suna tried to relax himself and act cool like how he usually is.
After a sip on his drink, Osamu continued.
"It was the usual hit-and-run accident, the bastard who ran her over escaped." he stated, a hint of anger underneath his calm demeanor. "Since she was always with us, she's not used to being all by herself and certainly doesn't know the way home back then. That day though, I happened to catch a cold so it was only 'Tsumu and her that's supposed to get back home together."
Osamu took a tired pause after that, "'Tsumu, being the dumbass he is, still attended the volleyball practice and told her to try and go home all by herself for once. We usually let her wait in the gym and go home together but 'Tsumu's in a really bad mood that day."
Suna felt something stir up in his gut, maybe annoyance? Towards the 5th grader Atsumu who actually said that to his younger sister, but he said nothing.
They were kids, way too young to even get blamed from something like this.
"She did went home alone, tried to at least. She ended up in the road, crossed but went unnoticed by the drivers since she was too small and was by herself. Crash and bam then the next thing I knew was she's in a hospital bed wrapped by tons of bandages and an annoyingly loud machine."
Gin's face scrunched up by the story, just as much as Suna's face turned into a frown. Osamu shrugged though, "I was a 5th grader, I was sick, I didn't know what was going on right away but when I saw our parents crying, I thought 'oh shit, something just got fucked up.' and I was right."
"Did the fact that Atsumu left her by herself got something to do with your current relationship?" Ginjima asked quietly, catching Osamu's attention.
They didn't missed the solemn look that crossed Osamu's face before the corner of his lips slightly turned up.
"No one blamed 'Tsumu." he answered. "It's not that fact that made us this way."
"Then what is?" the middle blocker asked.
"It's the fact that she couldn't remember anything when she woke up four days after the accident."