Snake Eyes (スネーク・アイズ Sunēku Aizu) is the 164th chapter of the Prison School manga, serialised in Weekly Young Magazine on January 19th, 2015 and published in tankobon format in Volume 17 on June 5th, 2015.


The chapter opens with heavy breathing from both Kate and Mari. Both of them are naked and drenched in sweat, and no longer in the ouroboros position, having "completed ouroboros." Mari claims that they have become one in every sense of the word, and that their fates are truly bound. In shock, Kate realizes realizes that the key of the handcuffs is missing from the box follow only for Mari to confess to lying. She reveals that everything thus far has been a ruse. She managed to hide a Smartphone on her person because Kate was distracted by her breasts. Kate begins to realize that Mari also lied when she claimed to have trespassed into the room prior to their confrontation. The door opens only for Hana enters with a computer to Kate's shock - who was convinced of having broken their friendship. A cognizant Mari reveals that it was an act since the beginning - she had forced Hana to pretend to betray and hate her in order to draw her closer to Kate. Having finally understood that that Mari asked Hana to record the whole scene, Kate falls to her knees out of shock. A victorious Mari then repeats her justification that she only did what Kate did to her.



  • The chapter title is a cultural reference to the American political crime thriller film Snake Eyes.
  • This is the first confirmed instance of sexual intercourse between 2 characters in Prison School.


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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