The Devil Wears Casual Clothes (私服を着た悪魔 Shifuku o Kita Akuma) is the 188th chapter of the Prison School manga, serialised in Weekly Young Magazine on August 31st, 2015 and published in tankobon format in Volume 19 on December 4th, 2015.


During the obstacle course of the Sports Festival, Hana tells a disbelieving Kiyoshi that they must change underwear back while acknowledging a reversal of her position because of Mari's dare. In spite of his correct suspicion that wearing his boxers throughout the race was affecting her performance, Kiyoshi remains sceptic of them being able to change in front of the crowd. However, Hana devises a plan to change at the next stage of the course which is the cosplay race under the skirt of a princess dress. Her plan is foiled when Risa selects the dress however, and Hana begins to panic. Remebering Mari's bet with Kate and some memories from two years previously, Hana is revealed to have concealed the secret of Mari's apparently horrendous taste in fashion for a long time. She realises that Kate is planning to reveal this and embarrass her in her dare to dance in casual clothing in order to bury the USC's reputation. Ignoring her warnings, Kiyoshi discovers a large box and removes a large cat costume. Though Hana despairs of being able to use it to change underwear, she enters it with Kiyoshi who takes the initiative and removes her underwear from below.

Characters Edit

Trivia Edit


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
Community content is available under CC-BY-SA unless otherwise noted.