Set in Year 2, Volume 2, Ayanokouji gets sent back to the White Room, with a few surprises. The worst possible ending for Classroom of the Elite. I think the artist who made the art is: Chlorophyll on pixiv

Ayanokouji Kiyotaka is a Second Year Class D student currently attending the Tokyo Metropolitan Advanced Nurturing High School. After surviving the recent Uninhabited Island Exam with his classmates, the tides start to turn against Kiyotaka as new developments start to progress beyond the walls of the school. His past in the White Room will slowly be unraveled and thrust into the spotlight as new faces begin to converge. What will be awaiting Kiyotaka when he returns to the campus? Will his friends learn of his dark past? Will he be forced to reveal his true abilities to friend and foe? Will his fellow students accept or turn their backs on him? Find out in this fanfiction which will explore my ideas surrounding the white room and his cohort's reaction to his darkest secrets. MAJOR LIGHT NOVEL SPOILERS FOR YEAR 2 VOLUME 4. All Rights belong to Syougo Kinugasa - Author of Classroom of the Elite.