- Volume Not AvailableChapter 0-19
- Ch 19 Oct 24, 2021 Ch 18 Mar 8, 2021 Ch 17 Mar 8, 2021 Ch 16 Mar 8, 2021 Ch 15 Sociopath Oct 29, 2015 Ch 14 Enregistrement Oct 29, 2015 Ch 13 Mystery School Feb 21, 2014 Ch 12 Another World Feb 7, 2014 Ch 11 Standstill Feb 7, 2014 Ch 10 I’m Not Insane Feb 7, 2014 Ch 9 Critical Tracking Jan 30, 2014 Ch 8 No. 31 Jan 30, 2014 Ch 7 Code I Jan 14, 2014 Ch 6 Onset to Labyrinth Jan 14, 2014 Ch 5 Secret Memo Jan 12, 2014 Ch 4 Monochromat Jan 6, 2014 Ch 3 First Day Nov 24, 2013 Ch 2 Lee Ji Eun Nov 24, 2013 Ch 1 Tunnel Nov 24, 2013 Ch 0 Prologue Nov 24, 2013
A sudden disappearance. And a memo from the lost student's seat. That was only the beginning to the unbelievable events that unfolded.