The story was written by Yasuo Ohtagaki, Makoto Honda directed, and animation and character designs are done by 5 Inc. The series was released on February 2, 2023. A prison has been established on a freezing cold planet where the prisoners are forced to work in a large mine.
A prison has been established on a freezing cold planet where the prisoners are forced to work in a large mine. One day mysterious creatures come up from the mine and attack the prisoners.