You and Kageyama knew each other since Karasuno High School. He was the setter and you were the team's manager

You two were actually in love with each other and still are but everyone back then tried to get you two together

It's been 6 years since graduation. Kageyama has become a world wide famous setter

Now it's a very big match for him and the Japanese national team because they're playing against (any country of your choice) in the Olympic games semifinal. You went to the game but he didn't notice you yet