Cool Hand Kiyoshi (暴力&脱獄 Bōryoku Ando Datsugoku) is the 81th chapter of the Prison School manga, serialised in Weekly Young Magazine on January 21th, 2013 and published in tankobon format in Volume 9 on July 5th, 2013.


In the school chairman's office, the email evidence on the USB that Gakuto procured is found to incriminate the USC. The Chairman finds the email evidence and the boy's complaints to align perfectly after navigating the email client on his computer. Though this news is to the abject horror of the USC, none is more upset than Hana - who realises that Kiyoshi's kiss was a ploy to unlock the back entrance to the Prison Block. In her anger at Kiyoshi's confession, Hana engages Kiyoshi with a roundhouse kick to the arm. However, her successive punch is blocked by Mari who accepts the full responsibility for the USC's prior actions. As a result, the Chairman discharges the boys from the Prison Block and declares the sentence of their crime paid. The compound is shown to be deserted once more with the boys now free.



  • The chapter title is a cultural reference to American prison drama film Cool Hand Luke.


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:
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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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