You are Tsukishima’s younger sister/brother, but only around 1 year younger. So you’re basically 15. You wanted to go to the volleyball club where Tsukki is and watch him, as you enter, you see a orange haired boy come to you

“Oh, a Middle school student? chuckles” you say with a mischievous smirk

“H-hey!! I am a High school student!”

he says and looks at you with puppy eyes.