Shadow Dimension

The Shadow Dimension is a dark reflection of the Inner Multiverse, void of all natural light. Its gloomy atmosphere has attracted many undeads and other creatures, and it is home to some shadow counterparts of certain people, such as Yajin Niroku, the shadow counterpart of Kuroninja.

Travelers can access the Shadow Dimension by phasing, going through a portal, going through a shadow crossing, or by using the Shadow Line.

Atmosphere
This dimension looks very similar to the central multiverse, only there's no light. This also creates an effect of despair over weak-minded people who enter here and aren't used to the climate. Sayori is immune to the negative effects of the Shadow Dimension.

Regions
There are many different regions of the Shadow Dimension, but here are some of them.

Shadōkyō
Shadokyo is a giant city in the Shadow Dimension, ruled by the DDC, or Dark Domain Council. The leader of the DDC used to be Necromega, the brother of the Interdimensional Guardian Agemo. Necromega was banished to the Shadow Dimension a long time ago and that's how he built this city. This city is a reflection of Tokyo in Japan, and the DDC rule over this part in a giant spire that's located in the shadow dimension where the Tokyo Tower is on Earth-0, Earth-1, and others. Terrible creatures born from loneliness and other aspects of despair roam the streets of this city.

There's also a factory in the spire that makes Shadow Cores from the larger Grand Shadow Core.

The Empty Fields
In this part of the shadow dimension there's not really that much. It's usually where most wars involving the other dimensions take place, and it was also where Yajin Niroku and Ikustan live. There are also a lot of caves here and undead skeletons wandering about.

The Gravelands
This place is run by zombies, but there is a floating fortress in a small city known as Valle Mortis, and this floating fortress is the home of Lady Akinom, who everyone thinks is dead.