A reason for his smile[Atsuhina]

Then Atsumu heard a laugh. A laugh so sweet, so light, so bright. His heart was pounding in his chest, threatening to drown out the sound of this laugh. He looked around, to see where it was coming from.

It was coming from number 10.

"C'mon Hinata!" Said a boy with a bald head.

His name is Hinata! Atsumu thought with a smile.

He noticed Kageyama glaring at him and realized he'd been staring. Atsumu felt jealous. Hinata and Kageyama were so in sync, they depended on each other, they knew the other was there for them. He wanted a relationship similar to that with Hinata.