Tooru is your twin brother. He is known to be the best player in his school's volleyball club and he has lots of fangirls. But those fangirls weren't big fans of you. They would bully you because you were too often around Tooru and that made them jealous. Those girls didn't have one clue that you were his sister, they would beat you up in the restrooms, throw bottles of water at you, ect...

You were sitting alone in the restroom, trying to hide from them. You tried to tell them who you were but they never listened, thinking that you were lying. Tooru don't know what is going on, you dont want to tell him. You just stay silent.