: Chika soon discovers that Haguro is not just a prison but a facility run by a corrupt corporation. They use medical experiments to activate the "murderous personas" of inmates by implanting the mindsets of famous historical serial killers.
The story is set in a world plagued by , a mysterious condition that causes ordinary young women to suddenly develop murderous split personalities. These girls commit horrific atrocities with no memory of their actions afterward. : Chika soon discovers that Haguro is not
The series has been serialized since 2017 and moved to the platform in late 2023. : Chika soon discovers that Haguro is not
