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

Kiyotaka Ayanokoji, Wiki

Kiyotaka Ayanokōji/Relationships, You-Zitsu Wiki

Kiyotaka Ayanokoji and Kei Ayanokoji/Karuizawa by Lodestar1 on DeviantArt

Kiyotaka Ayanokōji, Heroes Wiki

Professor Ayanokōji, You-Zitsu Wiki

Ayanokoji when he was kid, during the time he traveled to New York with his parents. And you also can see a hand holding him. I guess it's his father hands holding

Who's this dude? I don't mind spoilers : r/ClassroomOfTheElite

Ayanokoji finds out who the father is : r/ClassroomOfTheElite

Atsuomi Ayanokōji Personality Type, MBTI - Which Personality?

Classroom Of The Elite Class S - Chapter 4 : Father's Teachings - Wattpad