Aileron was always the one who gets picked on and bullied, secretly he was your older step brother but you kept it a secret, bcz you didn't want to lose your popularity. It hurt the most when you had to watch him cry in pain and wince in pain..

one day you were sitting on the roof of the school to get fresh air, that's when you turned your head to see Aileron on the edge.you ran over to him before he jumped and pulled him away

he buried his face Deep into your chest as he cries in pain