Isekai Tensei – Kimi to no Saikai made Nagai koto Nagai koto

◇ Explanation of world view

● Worldview

A world divided into four vast continents. Each continent is divided into "The Continent of Humanity," "The Demonic Continent," "The Subhuman Continent," and the "Divine Continent," an undeveloped continent once supposedly inhabited by the gods.

The world lived separately from mankind, demons and subhumans on each continent, developing each civilization. Eventually, the species of the world turned their attention to a vast, untouched, divine continent, trying to cross the sea and take its territory into their hands. But the fact that other races with the same ambition embarked on securing the territory of the Divine Continent eventually led the world to develop territorial strife into war, a world of prolonged warfare between races that lasted hundreds of years.

■ Continental Humanity

It is divided into more than a hundred small and large countless nations, each inhabited by more than a hundred million human beings. Physical and magical strength is inferior to that of other races, but continues to evolve due to technological and cultural development. In addition, to counter the strength of the Fae, the "Great Alliance of Humanity", which brings together talented people from all over the country, focuses on the "Arkline Empire", the largest nation on the human continent, into the wars of the Divine Continent. In addition, the ten chosen human beings, who are particularly talented, are given the title of 'Ten Brave Men of Light' and confronted with other races that surpass them with power.

■ Demonic Continent

In the past there were many nations, but the long strife between demons within the Demonic Continent led many nations to be eliminated, and at the end of the day, seven great powers and seven demon kings were to house the continent. The Seven Demon Kings, called the "Seven Great Demon Kings," fought over the Divine Nation Continent from strife with other nations in each country alone. Some demons are also divided into fine species such as demons, demons, cyclopses, undead, and all races have yet to be revealed.

■ Subhuman continent

It is divided into many countries, and countless tribes, with the largest population of the three races, but also the least stable within the continent. Among the subhumans, they even inhabit the Phantom Beasts, even known as the descendants of numerous Beasts and Divine tribes. Among the countless subpeople present, the strongest subpeople recognized by each race are given a title called 'Four Lion Heavenly Submen', which moves from intracontinental strife to strife with the Fae, centered on the four subpeople who have been given the title.

■ Divine Continent

Once supposedly inhabited by gods, and although there are numerous legends, certain races are now not inhabited, and abundant natural resources sleep untouched. Numerous unidentified organisms, as well as legendary rare organisms, are supposedly inhabited, but all of the continent has yet to be elucidated due to tri-ethnic strife and mutual restraint.

■ Three Unopened Worlds

A world inhabited on earth, considered an unknown world that does not belong to any apart from mankind, subpeople, demons, a world that can only be conveyed in literature and inheritance in the world, and in which no nation of any race has grasped out to detail. Three worlds called 'Sky World', 'Underground World' and 'Deep Sea World'. Its location has been considered a mystery for more than hundreds of years.

◇ Terminology

■ Three major titles

"The Ten Brave Men of Light," "The Seven Great Demon Kings," and "The Four Lion Heavenly Subman". Three titles to blast into the world.

What earns that title is considered a hero who makes his name in the history of the world, regardless of race.

■ Holy King

The existence of a mystery enshrined by the six chosen knights (paladins) and six kings present on the continent of humanity.

■ The five strongest men in the world

no matter the race, from its martial arts tradition, the five warriors rumored to be the strongest in the world

Crossbow-class Demon King Venbai, Rock's Demon King Xynn, Martial God Etham, Mad Beast Phantom Eubamensh, and Virgin Mary Kyle.

● Countries within the human continent

■ Kingdom of Elphasia

The country where Vert was born and raised. Located in the western part of the human continent.

Demographic and cultural levels are extraordinary, but their level of talent is one of the leading within the continent, sending numerous heroic candidates annually to the Great Alliance of Humanity.

It is also great and peaceful for everyone, be it royalty, nobility, civilians, peasants or class. The princess is fine to come and go in and out of the king's capital and the countryside, to date the children of the peasants, to support it while nibbling at it for all the people, and the king allows it too.

■ Arkline Empire

The largest nation on the continent of mankind in the centre of the continent of mankind. Its land, its population, its military power, everything is also flying through the continent, which is supposedly ten times greater than the kingdom of Elphasia.

It is also the site of the inauguration of the Great Alliance of Humanity and has always attracted many elites from all over the continent as the main base of the army.

■ Kingdom of Borbaldier

Once so great a power as to be called a fortified nation, the ability to construct and develop land using proprietary technology was known to mankind but also to other races. In particular, the covert construction of underground tunnels and submarine tunnels leading to the continents of the human continent, as well as to the continents of other races, to hold the world in their hands, also perished under the assault of one of the seven great demonic kingdoms that threatened its power, the Demonic Kingdom of Vesparda.

■ Chain Mile Kingdom

Either way, state

■ Lorban Empire

Either way, state

● Demonic Continental States

■ Yavai Demon Kingdom

A nation ruled by vampires, competing for the top seven demonic kings. Counted among the five most powerful men in the world, the prince, headed by the crossbow-class Demon King Venbai, boasts demon kings and unscrupulous powers, and the power of blood clans are considered to be closest to world hegemony, but unclear about the situation in that country.

■ Siegok Demon Kingdom

A nation ruled by the Devil Nation, competing for the top seven demonic kings. The military power of the overwhelming royalty and the inflexible ghosts far surpasses that of the Great Alliance of Humanity on its own. But Xynn, the demon king of Rock, who was on the throne of the Demon King, had not intervened much in the struggle for hegemony of the Divine Nation continent, even though he had the power of a nation, because he could be counted among the five most powerful men in the world, but when there is a crisis in his own people and nation, he unites unanimously to destroy his enemies relentlessly with his overwhelming power.

■ Markai Demon Kingdom

A medium-sized country among the seven great demonic kings, ruled by Cyclops. Although military might is inferior to the Yavai and Zygok demonic kingdoms, it has a strong attitude to hegemonic strife within the demonic continent, and for this reason it may also be combined with other races.

■ Vesparda Demon Kingdom

A middle-sized country of the Seven Demon Kings, ruled by the Demon Nation. Being moderate among the Seven Demonic Kingdoms and feeling worried about the prolonged war caused enormous losses embedded in the trap of mankind, even proposing a truce with other races. But this event touches the reverse scale, focuses on the war against humanity, and eventually remembers the threat to the tunnel to attack and destroy the Kingdom of Bolbaldier. Later, however, at the hands of the Great Alliance of Humanity, the army was destroyed and followed the path of annihilation.

■ Yami Demon Kingdom

A weak nation among the seven great demonic kings whose undead spreads, governed by a necromancer who manipulates the dead. Stabilizing your country because of the barren land full of deserts is all you can do, and you have no interest in war with other races.

■ Cry Demon Kingdom

Either way, state

■ Popo Demon Kingdom

A mobile nation, led by the Demon King Tyrotan. Without a particularly determined base, the demon king Tyrotan will put under his umbrella a territory that has been randomly destroyed, leading a wide variety of races to turn the land upside down.