Volume 21 is the twenty-first volume of the Prison School manga by Akira Hiramoto, published on June 6th, 2016 in tankobon format by Kodansha.[1]


The mysterious hooded man Jo convenes with the ants, awakening his latent clairvoyant power to deliver the "Ant Prophecy" on the verge of the Cavalry Battle. Though the boys use their visionary stratagem to falsify reviving the Vice Precident, the message Jo utters to the confident Underground Student Council with great foreboding is of their defeat! The monstrosity Andre became, under the influence of the Aboveground Student Council, threatens to overwhelm the USC too!? The long-awaited Cavalry Battle commences with Jo's prophecy looming over them...

Chapter listEdit

External linksEdit


  1. Prison School Volume 21 (Akira Hiramoto): Yanmaga|Kodansha Comics. (Japanese) Retrieved 17-05-2016.


Prison School by Akira Hiramoto
Volume 1:
Volume 2:
Volume 3:
Volume 4:
Volume 5:
Volume 6:
Volume 7:
Volume 8:
Volume 9:
Volume 10:
Volume 11:
Volume 12:
Volume 13:
Volume 14:
Volume 15:
Volume 16:
Volume 17:
Volume 18:
Volume 19:
Volume 20:
Volume 21:
Volume 22:
Volume 23:
Not in Volumes:
Non-Canon Chapters
Fukukaichou Gambaru:
Anime Promotion:
Other Series:
Other Series:
  • Fukukaichou Gambaru
  • Agonashi Gen to Ore Monogatari
  • Me and The Devil Blues
  • Yarisugi Companion to Atashi Monogatari
  • Sono Tomodachi no Gimon Ari
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