Mari is a female university student. She takes part in an experiment held by popular VTuber Sophia. When Mari arrives at the place where the experiment is to be held, she notices the place looks like a prison. 12 people participate in the experiment and they are assigned roles of prisoners and prison officers. The experiment takes place over 7 days. Mari is assigned the role of a prison officer. The experiment turns violent.
Mayu Hotta
Mari
Ken Nakajima
Gure
Kenshiro Iwai
Gete
Yûka Yano
Gumi
Tateto Serizawa
Yamane
Shohei Uno
H
Mamiko Ito
Kamiyama
Haruka Tateishi
Getsuyo
Nao Okabe
Renzu
Kanako Miyashita
Jen
Chihiro Okamoto
M16
Moeko Konno
Meso
Tomoya Maeno
Koki
Tomomi Itano
Yuma
