Hello! The lovely inochisart from Instagram drew a beautiful piece entitled "Atsumu is a liar, as told by Osamu" that inspired this fic! Her art is amazing so I would definitely recommend checking her out on Instagram, Twitter, or Tik Tok.

Please note- this story was written with permission from inochisart. Always ask permission if you're turning a post into a story and be sure to credit them. Now, enjoy!

Here's a link to the artwork - p/COIwOtOgwmV/

EDIT- This has not been proofread yet! If you see any mistakes just let me know and I'll fix them.

Atsumu is a liar. He has always had that habit. Atsumu never thought too much about them. He lied to keep himself out of trouble, to mess with someone, or even just because he wanted to see the others' reaction to his lie. It wasn't a big deal, he didn't lie about anything serious, it was just random things throughout the day. Osamu seemed to take the brunt of his lies though. At this point Osamu expected Atsumu to lie when asked an obvious question about whether he did something or not. Osamu could brush most of the lies off, after all, he was wasn't a perfect person himself, but there was one lie that he could never forgive Atsumu for. Every time Osamu visits Atsumu, he would recall his most popular lies.

It wasn't a secret that Osamu loved food. He had always been passionate about the diverse way someone could prepare a dish. He loved to experiment with different options and try new things, but he also loved the classics. He always kept a stash of his favorite food items hidden in the home at all times for him to enjoy when he got the craving for it. One of his all-time favorites was a delicious pudding from a local shop. It had to be kept in the fridge, so Osamu made sure to hide it in the back and sign his name on it in bold, black letters that took up the majority of the can. He remembered coming home late one day and looking forward to eating it, just to find it in the fridge completely empty. It had been in the exact same place he had left it, but when he turned it over it there wasn't even a drop left.

"I did not eat your pudding!" Atsumu immediately countered when he heard his name yelled throughout the house. Atsumu winced as he realized he just gave himself away and was too slow to wipe the evidence off his face before a very pissed off Osamu rounded the corner closest to him. Atsumu's most popular lie was about eating from Osamu's food stash.

Atsumu's second most popular lie always involved him having something that belonged to Osamu in his possession. Whether it was one of Osamu's shirts that Atsumu would venomously claim was laying on the floor of his room, so it is, in fact, not Osamu's shirt but his, or one of Osamu's games, his volleyball jacket that clearly had his number on it, or something as simple as one of Osamu's favorite pens. They always seemed to magically find their way into Atsumu's room at some point. Osamu didn't care too much, after all, he could replace it, or they would make their way back into his possession eventually. He remembered that most notably one of Osamu's old notebooks filled with random thoughts, volleyball tactics, school problems, and random drawings always managed to find its way into the stack of notebooks Atsumu kept near his desk.

"I don't have your notebook!" Atsumu yelled when Osamu couldn't find it again. He didn't really use it anymore, but he had yet to discover how Atsumu kept getting his hands on it.

Osamu never actually cared about any of those lies, despite how he would act sometimes. He could replace a shirt or a pen, he could buy more food, he didn't care about that. Atsumu was a known liar, and he always gave these little white lies, but there is one lie, just the one single lie, that Osamu hated the most. He didn't hear it as often, but it rang through his head every time he did. It was the only lie that Osamu could never forget, the one lie that he would never forgive Atsumu for saying. The only lie that his brother had said that he ever actually hated.

"I'll always catch up to you, Osamu!"

That one short sentence that Osamu hated more than anything in the world came to his mind again. He remembered the last time Atsumu had said that to him. It had been after a volleyball game. It was a hard match they played while they were in high school and their coach had praised Osamu for his performance. Their teammates had teased the twins about how they were out of synch and for once didn't match each other as they played. They teased Atsumu more since Osamu was praised and he wasn't. They bumped his shoulder and ruffled his hair saying he had fallen behind when Atsumu could no longer take it.

"I'll always catch up to you, Osamu!" He yelled it out to his brother as clear as day. There, in his red uniform still sweaty from the match, and a ridiculous smile on his face, he promised his brother that he wouldn't stay behind, that he would always rise to the challenge. He promised his brother that no matter where he went, or how hard he tried, Atsumu would always find a way to catch up to him. It sounded impossible, but Atsumu was determined to make it happen.

"You're a liar, Atsumu." Osamu muttered into the crook of his arm while tears streamed down his face. He brought his legs up higher to his chest and wrapped his arms around them.

"You lied to me 'Tsumu, you didn't catch me this time." Osamu's voice cracked and he pushed his back further into the grave that he was leaning against. He couldn't face the front of it. He couldn't stand to see the engraving on it.

Miya Atsumu. Beloved son, brother, and teammate. A man who doesn't need the memories and just needs to fly.

Osamu felt his heart shatter as he laid the flowers down in front of his brother's grave. Standing in front of it was too painful so Osamu instead leaned against it and focused on the swirling clouds that billowed high in the sky. He clawed at the sweatshirt he had on and chose to ignore the number seven that was printed in it. Water blurred his vision as he looked out across the field littered with flowers and tombstones. He took a shaky breath and looked to the sky once again.

"You're a liar Atsumu but keep flying."

Atsumu was a lair, and for the most part, Osamu could forgive him, but there was one lie that he didn't think he would ever forgive Atsumu for.

I'm sorry for the pain. This was actually super fun to write, and I loved the challenge of matching it to the already existing artwork! Definitely go check out inochisart to see the artwork that goes with this story, and please thank her again for me!

If you liked my writing style, there are plenty more Haikyuu stories on my profile! Also, if you have a second, please leave a like or review as they help motivate me and help me to improve!

See you next time!

~Kiera540