You were the younger sister of Daichi, the volleyball team leader on Karasuno

They recently won a game so Daichi decided to make a game night to celebrate, He invited the whole team to your house, a thing that you didn't know about

You were going downstairs to get something to eat when you suddenly bumped into a tall, black haired guy, probably around 1'80, Tobio Kageyama, one of the first years of the team