The World: The event known as the Extinction nearly destroyed the world a few centuries ago. From the ruins of the old world, new forces rise, striving to shape the new world according to their own desires.

Reclamation Army: The state founded by the man known as "Dynast". Sometimes they go by the name 'Reclaimers'. For centuries, he has waged wars to forcibly reunite the world and terraform the lands to remove all traces of Extinction. The state found many technological marvels in the ruins of the old world, and now it is one of the strongest powers in the world today. The population of the Reclamation Army is made up of various people. Mutants, normies, new breeds known as wolfkins, new breeds known as orais, and new breeds known as wyrms. Originally a strict autocracy, the Reclamation Army currently allows and uses many democratic institutions to manage the lands of a huge state as efficiently as possible. Despite this, the word of the Dynast is the law even today.

Iterna: Is the only country in the world to have survived Extinction thanks to the massive shield that protects the lands of this state. Aiming to establish alliances with the locals and rebuild the old world by either integrating the locals into Iterna or providing the locals with the technologies needed to rise to a pre-war and higher level. Iterna is terraforming the world to restore it to its pre-Extinction state. Currently, they are busy around the small city of Balach in the Ravaged Lands. The Dynast gave the order to leave them alone during the conquest of the rest of the region. The population of Iterna is made up of mostly normies and artificial humans, descendants of sentient AI Artificer. The strongest army in the world ensures the safety of the people of Iterna, as well as some of the strongest abnormals in the world. It was originally a constitutional monarchy, but Iterna now has a fully democratic government. Due to the fact that Iterna was spared from the side effects of glow, abnormals are rare in their lands, and the government of Iterna is taking all possible steps to attract abnormals to live on their lands.

New breeds, abnormals and blessed ones: Words and terms used by Iterna, the Reclamation Army, the Oathtakers, and others to describe those who were changed as a result of the glow, a side effect of one of many weapons that destroyed the old world. Even if their appearances differ significantly from that of normal humans, all three major world powers regard new breeds as humans.

Oathtakers: The weakest country of the three major countries Unlike the Reclaimers, they were not lucky enough to have an ancient stash of tools from the Old World. Through hard work and persistence, they claimed a region of the world for themselves. Despite boasting impressive military might, Oathtakers try to avoid fighting in a war of conquest. Instead, they are trying to convince other countries to join them, often using underhanded methods. The population of Oathtakers is mostly made up of normies, blessed ones known as trolls, and blessed ones known as the Insectoid Commune. Mutants are a rare sight in this country but are welcomed with open arms, just like everyone else. Technically, this country is a union of people ruled by the blessed ones, but all true power is held by Lord Steward, the uncrowned ruler of the Oathtakers. Always starved for income to continue building their version of paradise, the Oathtakers have built many gorgeous resorts for tourists from other great countries, rivaling even the ones in Iterna.

Apocalypse class: A classification given to extremely rare cases among new breeds. Every person with this rank has the potential to cause another extinction in the world. The only known people in the world who have been assigned the Apocalypse class title are Eugenia Mylli from Iterna and Outsider from the Reclamation Army.

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Power: Another side effect of the glow is the development of supernatural abilities or skills. Sometimes power passes from the parent to the child, but this almost always results in a weaker type of power. Rare examples of the opposite are the innate powers of wolfkins, wyrms, and trolls. Unless they have joined their blood with the blood of other tribes, the power of the offspring will remain around the same level as the power of the parent.

3rd Army: The army under the command of Wyrm Lord. He is a new breed, champion, and commander in the Reclamation Army. It is known as the weakest army out of the three armies in the state. After the original commander of the 3rd Army, Ravager, defected, many people in the 3rd Army still consider Wyrm Lord to be an upstart, as he never passed a trial of strength.

Wolfkins: new breeds, named so because of their external resemblance to wolves. Two major tribes of wolfkins exist: the Wolf Tribe and the Ice Fang order.

The Wolf Tribe: They claim their heritage from Ravager, the first recorded abnormal in the world. A less civilized tribe out of two tribes of wolfkins. Almost all of them serve in the 3rd Army. Eighteen wolfkins are known as the warlords, and they rule over smaller packs of wolfkins during wars. In peacetime, even warlords bow to shamans. The males in this tribe are weaker and smaller than the females.

The Ice Fang order: a more civilized tribe of wolfkins. They claim their heritage is from the Twins of the North. They were originally members of the 3rd Army, but because of constant clashes with their kin from the Wolf Tribe, ownership of the order was transferred to the 2nd Army. Many of their number are considered heroes of the Reclamation Army because of their attempts to always aid their fellow soldiers and civilians. The Order allows its members to pursue non-military careers. Twenty noble houses and forty Elders rule them. Each noble house has two Elders on the Council. Each house is ruled by the strongest wolfkin, known as a sword saint. The Council deals with most civil issues under the Ice Fang order.

Resistance: The group of various raiders, tribes, and gangs of the Ravaged Lands who have teamed up to refuse being subjugated by the Reclamation Army. Ruled by a mysterious person known as King, the main power of the Resistance comes from the Bento tribe and the Soultakers tribe. The Bento tribe is known as 'techno barbarians', people who replace parts of their own bodies with mechanisms, aiming to leave only the brain in the end.

Organization: The highly advanced group that lurks in the shadows. Their goals are unknown, yet their actions often cause tragedies across the globe.

Skinwalker: An extremely rare genetic anomaly among the Wolf Tribe's wolfkins. If a member of the Wolf Tribe has this anomaly and willingly pursues a life of combat and domination, she will eventually end up as a mad, nearly unkillable creature. Skinwalkers are considered to be divine by the shamans of the Wolf Tribe. All skinwalkers are considered hostile lifeforms, and travelers from all countries are advised to stay as far away from them as possible.

Warlord: The highest military rank among the wolfkins of the Wolf Tribe.

Shaman: The second highest rank among the wolfkins of the Wolf Tribe. Members abandon their names and only reclaim them if they are promoted or demoted. The shamans rule over the tribe in times of peace.

Wolf hag: The third highest rank among the wolfkins of the Wolf Tribe.

Scout: one of the lowest ranks among the wolfkins of the Wolf Tribe.

Warrior: the lowest rank among the wolfkins of the Wolf Tribe. Below them are only cubs and males.

Sword saint: The highest honorable and military title of the wolfkins of the Ice Fang order. Only those who excel in both close and ranged combat can claim it. The sword saints rule the noble houses of the order.

Knight captain: One of the highest military ranks among the Ice Fang order's wolfkins.