Black Monday (ブラック・マンデー Burakku Mandē) is the 106th chapter of the Prison School manga, serialised in Weekly Young Magazine on August 19th, 2013 and published in tankobon format in Volume 11 on December 6th, 2013.


Meiko is shaken by the events and use a difference language, to Mari, Hana and Risa in sight. Joe tells to Gakuto ask Kiyoshi instead, and soon after believe that Gakuto has broke up with Kiyoshi and then tells him his supposed disgust. He is then inform about Mitsuko's love for Yaoi and agreed to help Gakuto by pretending to be in love.
At the work hour, Mari tells Andre about Meiko's mental state and ask for a . Mari thinks that Meiko reverted to her child's personality. Andre doesn't believe her at first, but after he try to provoke Meiko and receives no affront he become totally afflicted as the Andrenomics fall.
Kiyoshi reminds his conversation with Chiyo, and decide he must investigates but Chiyo tells him that the tree has been cut down. This convince Kiyoshi that the SC is behind this and to obtain proofs. However, their conversation is heard by Risa.



Prison School by Akira Hiramoto
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Non-Canon Chapters
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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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