The fifth level of the terrifying prison located in the Black Star Village, this detention place is the most fearsome of all and many people who thought of commiting crimes have been quickly brainwashed not to do so by their own mind because of the fear of the great Black Star Detention Unit.
Here prisoners are trapped unable to use chakra like the rest of the levels of the detention unit using black star metal chains enchanted with chakra-supressing seals and chakra-supressing mechanism brought from the Snow Village from the far North.
Freezing Hell (極寒地獄, Gokkan Jigoku?) is the fifth level of the Black Star Detention Unit in which prisoners are kept in. In stark contrast to the level above it, the entire level here is a giant freezer. The level is so cold that not only do the prisoners kept here either freeze to death or lose pieces of their flesh from severe frostbite, and the food given to them is frozen to the level of being virtually inedible. Due to the extreme cold, Den Den Mushi don't function in this Level, thus cutting off both contact and surveillance, except on the locations localized around the entrances that connects Level 5 to the previous and next levels. Along with the severe cold, the level is inhabited by wolves. These wolves roam around the level like the beasts of Level 2, where they were originally stationed at. However, they proved to be too brutal to be in Level 2 as they also hunted the other beasts as well, including the Basilisk and the Sphinx.
Along with the bitter cold of the level, there seems to be a occurrence of prisoners mysteriously disappearing as well. Prisoners who are incapable of moving by themselves have been disappearing without a trace. Because of this, the Detention Unit staff and the prisoners call this phenomenon, the "demoning away". The superstition is that the missing prisoners have been actually pulled away by demons to the Gates of Hell itself. The belief of this superstition has been carefully kept within level 5 so that no inmates from the upper levels were aware about it.