- Chinese: 魔界
- Pronunciation: Mo Jie
A dimension where demons reside. It co-exists besides the twelve dimensions.
It can be accessed via Mie. If a human were to enter, he/she will die. By entering Mie will envelope the intruder with demonic energy, which will also kill him after he returns to his home world.
Several demonic power-users constantly attempt to gain control over the demons for respective reasons and plots.