Karasuno High Team Formation ArcEdit
In the Interhigh preliminaries, Iwaizumi's team faced off against Karasuno High. In the end, Aobajousai advanced, but only to be defeated in the next round by Shiratorizawa Academy. While most 3rd years from other various schools moved on and left the volleyball club behind after the Interhigh, Iwaizumi and the other 3rd years stuck around to have another chance at beating Shiratorizawa.
Tokyo Expedition ArcEdit
Spring High Preliminary ArcEdit
In the Interhigh preliminaries, Iwaizumi's team faced off against Karasuno High. In the end, Aobajousai lost against Karasuno, thus finishing Iwaizumi's high school volleyball career. He returned however to watch the Shiratorizawa play against Karasuno, and ran into Oikawa, and watched the match with him.