User blog:Unbacked0/Nippon Ichi Cosmology and Terminology

The Cosmos
The Cosmos is the collective term used for the Multiverse which the Nippon Ichi Verse is set in. There is an Infinite amount of Universes set across the Cosmos and each universe is separated into three separate types of universes based on what their main inhabitants are, Netherworlds, Celestia or a Human Worlds.

The Netherworld
The Netherworld is the realm where demons live. Most Netherworlds are chaotic places due to the natural nature of demons, there is a constant battle to determine who is in charge since whoever defeats that Netherworld's Overlord becomes the Overlord themselves. Netherworlds are less advanced with most of them having very limited technology aside from specific Netherworlds.

Demons gain power from the energy that is created when a human is afraid of a demon, this energy is called Fear Energy.

There are more different types of demons, ones the look like humans, dragons, slimes, wolves, cat-girls who know the Hokuto Shinken, succubuses, imps and zombies. Aside from demons, there are also a few angels the go to the Netherworld, mostly for monetary gain and Prinnys which work in the Netherworld to pay off their sins

Notable demons include: Laharl, Zetta, Adell, Mao, Valvatorez and Killia.

Celestia
Celestia is the realm where angels live. Unlike the Human Worlds or the Netherworlds, each Celestia is very similar to one another due to the fact that most inhabitants are angels which are always the same which is different from the Netherworld which has a large variety of demons and the Human World which has other types of humans as well as talking animals and witches.

Angels gain power from the energy that is created from the faith that humans give off whenever they pray to God or angels, this energy is called Awe Energy. Angels have unique physiology which makes the invisible and intangible to anyone who doesn't know or believe that angels exist.

Celestia is always shown to be the most technologically advanced with the ability to develop a Bomb capable of destroying several universes, Giant Robots capable of lifting the Moon, Multiversal Travel and a Digital Multiverse.

Aside from angels, there are also Prinnys which work in Celestia just like they do in the Netherworld and there are also demon monsters which are kept and guard dogs and pets by angels to protect Celestia in case something goes wrong.

Our knowledge on Celestia is limited since we have only seen two different versions of Celestia when compared to the hundreds of Human Worlds and Netherworlds that have been seen throughout multiple series.

Notable angels include: Flonne, Artina, Archangel Vulcanus and Seraph Lamington.

The Human World
The Human World is the realm where humans live (obviously). Despite the name being the Human World, the Human World refers to any universe where humans are the primary inhabitants. Most Human Worlds are depicted in one of two ways, either as a having a setting which resembles our own past but most magic exists for people to use or as a futuristic setting where people have a large amount of technology to aid them if they are physically weaker than angels or demons.

Despite what you may think, Humans are really powerful with highly trained humans being able to fight as well as any powerful angel or demon can. However, despite this most humans wear a suit which amplifies there power so that they can fight on par with demons.

Notable humans include: Marona, Almaz, Pirohiko, Fuka and Judge Nemo.