Kageyama frowns when it seems like Oikawa is following him and then the fact he's yelling at Hinata like that. He very nearly hightails it because seeing Oikawa has his heart and his head all out of sorts and being alone with him even outside a bar is more than he's prepared for. He looks to the side when Oikawa looks at him.

"...Hi," he says, inclining his head in a slight bow. Maybe he should've made a run for it. It's been a long time since the two of them have talked and yet he feels right back to his high school self.