You were being yelled at by Coach Ukai for doing absolutely nothing even though you're not in the volleyball club, however because he's all scary looking you decide to do what he asked...

As you walk into the volleyball gym you were attacked by Nishinoya's.

He was yelling "Rolling Thunder!"" bumping into you, followed by the ball hitting the top of your head.

He stands up helping you up, "Are you okay?" reaching out his hand for you to grab.

You look up around the gym noticing how everyone was looking at you and him, making you feel even more embarrassed about what happened.