Once the youngest prince of the Utgardian Empire situated within the Demon realm, he voluntarily participated in the Dark Lord Surt's rite of succession and invaded the Floating Continent of Yggdrasil. Subjugating the Goddesses of the Four Seasons as well as his sisters and absorbing them into his forces, he eventually founded the Asgard Empire. Many of the characters who appear such as Vali or the heroines are his descendants.

The Chief God who once governed over Yggdrasil in the past. After Loki went missing, she ruled in his stead, keeping the peace between divine and demonic Asgardians as a bridge between the two. Her death then caused the inevitable disintegration of Asgard's peace, and the flames of war threaten to raze the lands once more.

The secret treasure of Yggdrasil once sought after by the Dark Lord Surt. It has since passed hands from Loki over to Vali, and Vali uses its power to subjugate the goddesses and transform them into his servants.

The new sacred tree Yggdrasil that sprouted after the Yggdrasil Royale. Over the past 500 years, it has grown into a mighty tree once more. Taking in the prayers and wishes of the citizenry, it harbors a powerful aura within its shaft.

The name given to the war on Yggdrasil where the Overlord Loki made a name for himself. As part of the rite of succession to the throne of the Dark Lord, Surt's successors invaded the Floating Island of Yggdrasil. Following many battles with the goddesses protecting the island and his fellow successors, Loki emerged as the victor.

In the distant past, this war marked the final battle between the divine and the demonic. Through countless sacrifices and bloodshed, the world was almost reduced to rubble. The effects of this war are still felt in the present day, with ruins strewn across the landscape and cursed lands that kill all who enter.

Energy derived from the feelings and raw emotions of the people. Esprit comes from prayers and faith, while Sutra comes from feelings of desire or more negative emotions. Goddesses and high level demons who make use of this power derived from humanity are considered a cut above the rest, with strict hierarchies formed based on this power... Despite the fact that without people, without humanity, their power would wither and fade away.

The potential amount of spiritual power one can hold within. For those able to convert the faith or desires of humanity into power, their spiritual capacity tends to be rather high.

Using Esprit or Sutra, these armaments can invoke phenomenon bordering on the miraculous. Equipment that only goddesses or Dark Lord-level demons with their abundant spirituality can make use of, these armaments are akin to symbols of their power.

A disease that only affects goddesses and high-level demons, as it is an illness that directly attacks one's spirituality. Any victims of this disease suffer a parasite attached directly to their spirituality that steals the host's esprit and sutra, gradually draining them to the point of debilitation or madness. A terrible illness that exacerbates the more you use your powers.

The largest nation currently in existence on Yggdrasil. It is the empire founded by the Overlord Loki, and its citizenry is comprised of gods, demons, and humans alike.

What was once the biggest empire in the Demon realm. After the death of the Dark Lord Surt, the gate to the surface was occupied by the Asgard Empire, shutting it off from the outside world. As a result, it finds itself close to ruin. However, technology from the era of the Ragnarök War is still used even in the present, and their fleet of airships is not to be underestimated.

A ship with flight capabilities. As they require a lot of energy to even move and a great deal of lost technology from the Ragnarök War era, not many airships are seen in the present day. Airships were often used as a weapon of war and, wanting to soften the trauma from the war caused by the destruction wrought by these ships, many were decommissioned. Even the Asgard Empire only employs a scant few airships in the present day due to this. During this war for unification of the Empire, Vali acquired an airship from his sworn ally Sieg, and it has become his forward command center for all intents and purposes.

The belief in Divine Supremacy can be summarized as the principle that arose to ostracize demonkind by the divine following the disappearance of the Overlord Loki and the death of the Chief God Odin. The faction supporting Divine Supremacy was one that, on the surface, wholeheartedly supported the Asgardian Empire and actively aided their leaders in political matters. But behind the scenes, it was in reality a puppet faction that was under the direct control of the Asgardian Senate. The idea of gods and demons coexisting was akin to oil and fire existing alongside each other, and now that the two beings who could serve as a bridge between the two sides were gone, it was only a matter of time before civil war erupted.