Some people may have already noticed that Divine Gate is based on Nordic mythology. In Norse mythology there is Yggdrasil, the world tree. This world tree contains the world of gods, giants, people...etc. In Divine Gate it is also the case that five worlds exist.
Terrestia - World of humans: The place where the series takes place. Terrestia probably comes from the word Terra, meaning earth. Not only people live here, but now also other races and the Next. Hybrids between races. Arthur, for example, is also a Next. His father was the fairy king Oberon and his mother was a human. The earth was repeatedly destroyed and recreated by the gods through the Divine Gate.
Celestia - World of fairys: The name Celestia probably comes from the word Celeste, which means the heavenly one. So Celestia is equated with the kingdom of heaven. The first fairy king Nicholas came from there, who rebelled against the gods and brought gifts to the children on earth. Holy Night Town is the town where Arthur spent his childhood.
Hellestia - World of demons: Hellestia clearly comes from the word hell, which fits well in this case. Hellestia, like Celestia and Terrestia, are worlds that have merged together. I don't know if Ragnatia is included. From Terrestia, you can take the train to Hellestia.
Dragtia - World of dragons: Dragtia probably comes from the word Dragon. It is the only world that is certain not to have merged. That's why Oz is the only dragon on Earth. Because Oz is around 700 years old, I assume dragons can live to be very old. Dragons can take human form.
Ragnatia - World of gods: The world of the gods is certainly named after the word Ragnorök. Ragnarök is a description of the apocalypse initiated by the gods. And the game is about preventing this. Unfortunately, the anime missed that point.
Even if the series tells us something different, every being has an element. There are a total of six elements...
Fire, Water, Darkness, Light, Void & Wind
The six protagonists of the series and the game have one of these elements, as the six geniuses and the six Nordic gods, who also make a major appearance in the game and series. I assume that you can change your element, because Arthur's "Table round" previously had all light elements and later reverted to their own elements. Oberon and Vlad also changed their element.
Gods that appeared in the series were Surt /Suruto (Fire), Högni /Hogni, Hegni (Darkness), Odin (Light), Sigurd /Sigurus (Water), Hoor (Wind), Hervor (Void) and Loki (Void).
The special thing about gods is their glowing eyes, the signs of light that surround them and the pentagrams that make them seem to float. Apparently their divine power lies in their eyes and it takes a lot to become a god. Loptr has failed to be god, so the divine power was removed from one of his eyes and implanted in Loki. So that he could become a god instead of Loptr. That's why a mask covers Loki's other eye. Because this one doesn't light up. Loptr has a scar from taking out. He and Loki are together called “the tainted gods”. By the way, Loptr is just another name for Loki.
Funnily enough, most of the gods featured in the anime are not Norse gods at all. Högni, for example, is a warrior who appears in the Ring of the Nibelungs. Surtr is actually a Joutunn (giant) and opponent of the gods. Sigurt is also a hero from "The Ring of the Nibelungs" and Hervor doesn't seem to be a Nordic god either. Although Hoor and Odin are Norse gods, they are comically portrayed with the wrong gender. With Surtr I can still understand why he is there. Surtr plays a big role during Ragnarok. And since the gods here are the enemies of humans and are intentionally bringing the apocalypse...that makes sense. But I don't understand the other names.
There are six Saints subordinate to the gods. I only know Dante, who seems to be a god with the element of fire, and Nicholas, the former fairy king with an incredibly old age and the element of void. As far as I understand, they murder on behalf of the gods and/or the World Council.
The universe of Divine Gate is very diverse and interesting to explore.
