Kiyotaka Ayanokōji is daddy (@fw.fatherayanokoji)

Kiyotaka Ayanokoji and Kei Ayanokoji/Karuizawa by Lodestar1 on DeviantArt

Kiyotaka Ayanokōji, Villains Wiki

Who will win, Ayanokouji Kiyotaka or Violet Evergarden? Why? - Quora

Kiyotaka Ayanokōji, Heroes Wiki

Professor Ayanokōji, You-Zitsu Wiki

Classroom of the Elite Season 2: Episode 10 Review

Youkoso V10C3 Part 5 – Confused Translations

Professor Ayanokoji as the Teacher of Class D - Prologue - Wattpad

Who is more intelligent or will win against each other solely on their wits, Ayanokoji from Classroom of Elite or Lelouch from Code Geass? - Quora

It kinda amazes me how Chabashira created her own fiction about Ayanokouji's situation without even ever having talked to his father. : r/ClassroomOfTheElite