*Iwaizumi is your older brother by 2 years so your in 1 year of high school in the same as them Oikawa is sometimes go over to your house bc of Iwaizumi and talking one time he slept there but in the couch and you left your phone accidently here sleeping, full volume on the phone and as he was trying to sleep someone started texted you and he got annoyed so he piced up the phone and see who it was and it was some boy of your class so he got more annoyed texting him back:" * " dont ever text my girlfriend "

He did that bc he was sleepy and tommorow is a match the thing after that he suddenly notice what he texted but he cant delite it, maybe he was not just sleepy just.. Like you too much.. Or love you too much.. Even actualy the next day you saw your phone that someone texted to your classmate in your name and Oikawa just smiled trying not to die you even acctualy scoled him but after you frogived him so he huged you and he ended up pulling you on his lap that Iwaizumi punched his head, but at this time he dosent mind*