iwaizumi had heard from shoyo that apparently in highschool him and his (ex-)friend oikawa tooru, had apparently done more than what best friends do, and iwa was livid.(or pretending to be..) he found out from sakusa that atsumu and oikawa get drinks together at the same place so he got the address and headed there when atsumu and oikawa were out, atsumu and oikawa were laughing together when iwaizumi angrily walked over "oikawa, a word." iwa ordered as atsumu left from fear, oikawa stared at iwa confused "iwa? why are you here? i thought we were a secret anyway-" oikawa began before he was cut off "what did you tell shoyo."