Overworking himself, training overtime, all to exhaustion. That was just the way Oikawa was. He was born without natural talent, so all he could do was try to make it bloom. He couldn't achieve perfection, but he was determined to get was close as he could to it.
You'd think he'd change after you, the manager joined the team, someone with that position should look after the players, but you turned out to be just like him. And two perfectionist idiots weren't exactly the perfect duo.
So here you were, sitting next to him on the floor of his room at ungodly hours, the only source of light being the TV screen showcasing your next opponents matches. You two were determined to figure out everything about them. All their strategies, weapons and weak points. All to achieve victory.
"Wait, look at how he tricks the blockers with his posture." Oikawa rewinded the recording a few seconds, pointing to the team's setter. "He looks like he's setting outside... but goes for a back set instead."