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Hokkaido's Main Planet

Nippon is a sovereign interstellar nation-state based heavily on Japanese culture. Located in a region of habitable star systems bordering the Universal Council of Races, the United Earth Government, and the Union of Soviet Space Republics, it is recognized as one of the main factions in the Milky Way Galaxy despite its relatively small size compared to the other main powers. On their first contact with the UCR and the UEG, Nippon had recently changed from a multi-world Shogunate to a more parliamentary constitutional monarchy and quickly offered their support to the UCR in the last days of the NDE conflict. Nippon reinforced its friendship with the UCR, establishing an alliance that the JSDF, the military branch of Nippon would honor if any enemies entrenched on UCR territory, so long as the UCR would do the same for the JSDF. Following an attack on Nippon by Exon and the UNSC, the JSDF isolated the home planets from any contact, including that with allies, soon restricting access to any Nippon territorial space and forcing everyone else to leave. As the main body of the government collapsed, multiple groups and organizations attempted to seize control of the faction and institute a new operating system, before the military branch finally took control and established a new Imperial system. Following the recovery of the attack, Nippon secretly initiated a transition into the new Empire, focusing on military expansion.


It is unknown how the people of Nippon developed the way they did; the faction is entirely comprised of Japanese-ethnic Humans. The theory accepted by the UCR and the UEG states that these Humans were placed on the planet Nippon by ancient Forerunners during their reseeding of the Galaxy 100,000 years ago, which would also explain the presence of Humans apart from Earth, such as in the Universal Council of Races or the Exon planets. The culture of the people on Nippon would remain locked in a manner highly resembling that of Japan, from the mythology to the historical practices and events.

The Warring States


Space Exploration


Unified Rule

At some point in Nippon's history, the governmental body elected a particular male leader as Prime Minister. This individual enacted a series of doctrines and changes, appointing allies to positions of power and subtly altering the government to benefit his desire to extend his rule and reign as a benevolent dictator. His benevolence would turn sour over time as he tightened his grip over the people, including a complete restraint on further interstellar exploration intended to further isolate Nippon from possible discovery by intelligent beings. It would be a long time before he would be removed from office and separately assassinated.

Discovery of Godzilla

In the early fall of 2554, shortly before the JSDF came into contact with the UCR, various disappearances of ships near Wakoku started a series of investigations, which lead to the findings of a massive Kaiju that would fall into infamy known as "Godzilla." Throughout the season, the JSDF found itself unable to repel the creature and safeguard the population of Wakoku, which came under attack from Godzilla multiple times. It was only through the intervention of Dr. Serizawa, who developed a secret superweapon, that the creature was destroyed, though his life was taken with it. All information on the weapon was purged by Serizawa, though efforts to revitalize his research continue to this day.

After Godzilla was killed, the Nippon government was reorganized, including the establishment of several new officials to replace those that died from Godzilla's attacks. This included a new Prime Minister, whose new policies and leadership helped rebuild Nippon into a better, more peaceful faction, lifting the restrictions of interstellar exploration. Ultimately, these new lifts on exploration is what allowed the JSDF to discover the UCR.

NDE Crisis

The Nippon government, having recently undergone some refinements including new leadership, was more than welcome to help their newfound interstellar society that was the UCR in their conflict with the NDE. Despite entering after the second half of the war, the JSDF performed well in cooperation with the UCR. In the end, their help was crucial in at least small ways to the victory of the UCR. Through this time, the JSDF also encountered and cataloged the Adventure Group.

After the crisis, Nippon remained an ally to the UCR as well as the UEG, despite reluctance to sign any treaties on the matter of galactic alliances, mostly due to their inexperience with other governmental bodies and cautious of potential backfires or backstabbing. In a general sense, the JSDF would be used as a reserve support force to be called upon, should their allies request any aid from conventional military engagements or natural disasters.

The Great Destruction

The Great Destruction was the Nippon term for the joint invasion enacted by the UNSC and Exon military forces. The invasion occurred during a period of relative inaction from Nippon, who had been left out of most major political affairs for some time. The governing body of Nippon began to reconsider their alliances as the other factions joined into major alliances and threatened to war with each other. The major alliances were the New United Nations, comprised of the UCR and the Cineris worlds, against the Central Galactic Empire, composed of the UEG and Union of Soviet Space Republics, otherwise recognized as Exon; Nippon wanted to avoid joining into a large war that could cause immense death and destruction for its people, while also reluctant to choose a set of allies that would ultimately make them equally powerful enemies.

While considering their political options, the homeworld of Nippon was suddenly visited by an entourage of warships from the UNSC and Exon navies. The visitors completely circumvented every order to stop for processing or attempt to question the sudden appearance and sent transports directly to the central Nippon government estate. Nippon's reluctance to make enemies with the powerful factions caused a hesitance and lack of firm response from the JSDF, allowing the visitors to send diplomats and armed escorts to the Prime Minister's office to discuss a political alliance and official joining into the Central Galactic Empire.

One of Mirakumo's many Tunnels for civilians to use... a similar variant is used for Trains

Though the conversation was at first relaxed, it became tense as the Prime Minister wanted details on Exon and UNSC's desire for the JSDF to join them, and discuss mutual benefits and exchanges and trade. When he continued to ask questions instead of quickly agreeing to a treaty, the diplomats grew annoyed and had their guards eliminate the Prime Minister's security and capture him alive. At the same time, the military vessels of the UNSC and Exon simultaneously launched an assault upon Nippon's defenses, taking them completely by surprise. The CSO at the Planet's moon wiped out the defenders surrounding Nippon's moon in mere moments before joining the attack on the planet itself. The smaller JSDF defense fleet was quickly annihilated, the planet's Laser Sphere Grid was shut down, and landing invaders were dispatched to the surface of Nippon within a matter of minutes. Communications were cut just after a call for reinforcements was dispatched to nearby Nippon worlds, but they would not arrive in time to help.

The military commands on other Nippon worlds called for help from the JSDF's other allies, seeing that they desperately needed assistance from their old allies, the UCR. To their begrudging fear, the Nippon worlds were informed that help could not come until Nippon officially agreed to joining into the New United Nations in full opposition against the Central Galactic Empire. The JSDF had to allow the New United Nations to enter their territory and infiltrate Nippon, in a hopeful effort to recover what remained of the official Governmental body for the alliance into the New United Nations to be officially locked in writing. The CMF sent an infiltration team through the invading force, and while the JSDF's ground forces fought off Exon's army to little avail, communications were established.

Taking over as a temporary command over the Nippon faction until the official government could be recovered, the JSDF agreed to the short-term alliance of non-aggression with the New United Nations. At once, relief fleets from CMF, UCR, Vanguard, NRR, Necris, and TRM immediately went straight to Nippon. At this point, desperation had set in on the JSDF fighters against Exon and the UNSC, with multiple armies performing last-resort suicide attacks as they panicked at the possibility of total defeat and annihilation. By the time that the relief fleets had arrived in-system to begin pushing away the UNSC and Exon fleets, the damage strung across Nippon had grown extensive, with almost every city rated as being 80% destroyed or more, and a catastrophic loss of civilian and military life occurred.

Eventually, Exon and UNSC were herded away from Nippon by the Alliance. Initial scans of the Planet showed a total lack of life on the planet's surface; it was initially feared that Nippon experienced a complete extinction, though it would later be shown that there hundreds of millions of survivors that managed to retreat to underground cities specifically designed for catastrophes of this level. A total lockdown was enacted, with the JSDF reinforcement cutting off all access to the planet from their new allies, initiating a communications and intel blackout across the planet, and a few days later insisted on the departure of the New United Nations ships, forcing them to withdraw beyond JSDF borders and only patrol the exterior of the territory for protection.

Subterranean conflict

Due to the devastation of the planet's surface, the remaining population of the planet retreated underground in pre-built super-shelters called "Layered." These super-shelters were each large enough to be considered cities in their own right, and were able to function without outside influence for at least two years; they had some ability to fabricate materials and resources, though this was greatly limited. These shelters were all interconnected, and all tasks and operations were managed by a powerful AI called DOVE, known by the populace as "The Controller." According to protocol, the entire populace had to remain underground for at least the next year, a contingency against any possibility of loss of habitation or remaining enemy military presence. No form of communication could be made with the outside universe, as the contingency protected against any sort of invasive intelligence gathering; for this reason, not even JSDF forces from other worlds could truly determine the state of the population, only enact strict protocols of defense and patrol while waiting for the time for the survivor's reemergence.

However, the contingency was not lifted after one year, as DOVE had determined the surface of Nippon to still be too dangerous for any sort of repopulation. This was initially supported by the government, as they were aware of several nuclear facilities releasing their harmful byproduct shortly before the mass evacuation concluded. Unfortunately, people had begun to doubt the validity of the claim, and after the 18 month mark came without a safe report, the population began to realize that supplies were running low faster than the projected shelf life decreed; despite being designed and intended to maintain a high concentration of people for a full two years, an actual test was never conducted due to being considered "cruel and inhumane" on select groups for simulation purposes. As a result, there was no prediction that the entire population would consume all stores of food, water, oxygen, and additional resources in less than two years. Additionally, any queries made to DOVE on the status of the surface were met with the same blank reply, that the surface remained uninhabitable and that the contingency would remain in place until further notice. Several checks over the years started to unveil some minor problems with the AI's systems, as well.

Three corporations rose to particular prominence around this time. "Mirage", originally an industrial machine manufacturer, matured into a powerhouse of maintenance and production to increase their influence, including the making of AC's. "Crest", Mirage's main competitor, was formerly a bioengineering group before redirecting its efforts into security, also incorporating AC manufacturing and was just as eager to expand its influence over the population. "Kisaragi" was initially a smaller group, but suddenly flowered after a successful stint in computer maintenance and research, and bided their time for opportunities to increase resources and influence.

In August of 2578, a group called the "Union" unveiled themselves, announcing their disdain for DOVE's assessments and were opposed to the AI's seemingly uncontested rule of the situation of the population. They began to gain favor over the population and ended up as targets for the three corporations due to their disapproval of maintaining control over everyone. The opposing groups ended up going into protests, and eventually at the 2 year mark armed conflict erupted, with a corporate war being initiated and being too supported for the JSDF to prevent from happening. Most of the populace was divided into favoring the three groups, though a considerable number sided with the rebellious "Union." By this point, the "Union" came to believe that DOVE was malfunctioning due to its inaction regarding the conflict, and started making all efforts to escape the underground society. These operations were continuously hindered by the corporations, who each had private views in mind and sought to keep everyone underground, maintaining their influence and eliminating the competition so they could have total control over the population.

It was discovered that DOVE was perhaps constructed purposefully flawed, to degrade and become more deficient over the span of a few years so as to lead to eventual societal collapse and allow some corporation to establish themselves as the new order. Which of the three corporations, if any, might have had part in this is unknown. The situation grew more dire, as the armed conflict began to damage the infrastructure of Layered, ranging from simple property damage to entire sections collapsing. A serious panic began to occur when segments of Layered started becoming too dangerous to live, with incidents ranging from food getting contaminated to the shutting down of oxygen and supports being loosened, causing structures to cave in. Investigations shocked members of the "Union" who realized that it was actually DOVE intentionally destroying the society it was built to protect and help maintain.


Ultimately, the heads of the three corporations were eliminated, DOVE was destroyed, and the "Union" successfully broke out of the Layered. The JSDF on outside worlds were finally contacted, and were notified that the government of the underground societies had essentially experienced a total collapse. While the remaining powers of the corporations tried to survive, JSDF officials took away all their influence with their arrival, having declared martial law on the surface until society could be reorganized. The surface was indeed still partially uninhabitable, with only select cities safe to reintegrate any population.

From this point, limited contact with the UCR was reestablished; all communication was still highly restricted, and public knowledge wasn't released on Nippon's repopulation. All information regarding the subterranean activity and surface repopulation was kept under such intensely high classification that only top political and military leaders were even remotely aware of it. A few new corporations rose from the ashes of the subterranean crisis, to replace the gaps left by the previous powers; Zio Matrix, Emeraude, LCC, and Balena.


Nippon is currently undergoing repopulation efforts on their homeworld. The experimental Radiation cleansing technology obtained from the war with the Garmillas is currently being used to clear most of the major cities so that civillians can return to their homes. However, issues remain as the major corporations that produce AC parts and supply missions for the Raven mercenaries currently war with each other, claiming areas of territory as well as vital resources. The JSDF from external colonies is currently going over options to resolve this. While the other colonies would be able to donate military power to protect the faction, the Nippon homeworld is vulnerable to infiltration and attack.

War with the Garmillas

(Wip, reworking)

Shortly after the devastation (around 2578), JSDF leadership from other worlds received information on a radiological attack on a UNSC colony by a race of aliens known as "Garmillans," who gave the faction an ultimatum to surrender to them or further assaults would happen. Officially to travel alongside UNSC Naval power to find what the JSDF claimed to be "technology that could restore habitability from radiological attack," the JSDF sent a newly constructed Space Battleship called "Yamato."

The Yamato proved highly effective in its aid, demonstrating success in its first combat test when helping the UNSC destroy the Garmilla ship hiding in a cloak field in the colony's Oort cloud, there to maintain watch on the UNSC and initiate further attack if necessary. After the Yamato's crew informed the UNSC that the source of the technology lied outside the Milky Way in the nearby Large Magellanic Cloud, the Space Battleship traveled there with the UNSC force, continuing to fight the Garmillas empire.

After several more great battles, the Yamato was instrumental in claiming the technology and defeating the Garmillas military over their homeworld along with the UNSC. The Yamato was where a truce was signed between the UNSC and the Garmillas empire, and after returning to the colony and using the technology to cleanse its surface of all radiation, the Yamato returned to JSDF space, presumably to use the same technology to help restore Nippon's surface.


The planet Nippon is the third world from the Sun, named Amaterasu. It has one moon, named Tsukuyomi.

Nippon resembles the Planet Earth in many ways; located in it's star's habitable zone, Nippon is the only planet in the Amaterasu System that was not terraformed by the JSDF to support life. Nippon has a rough ratio of 7:3 of surface liquid water and solid land. Some of its mountains exceed 6 km in height, with the tallest peak, Grand Fuji, being 6767 m in altitude at the coordinates 46°21'32" E 61°35'53" N. The lowest point is almost 1.4 km deep and about 313° south-west of the Okama crater, also known as "the five color pond", a popular tourist destination.

The Planet's landmass consists of several continents; the most populated and technologically balanced is a medium sized archipeligo, a slightly curved island chain consisting of 5 main islands and many hundreds of smaller, lesser islands. This land is called Wakoku, and is established as the main area of Nippon, having the location of both its former and current capitals, and highest population density and greatest balance between technological development and natural characteristics. It is quite obvious that, despite consisting of 5 main islands instead of 4, Wakoku greatly resembles the country of Japan on Earth.

List of biomes

  • Ice Caps
  • Tundra
  • Highlands
  • Mountains
  • Grasslands

    Mirakumo City, the most popular and developed of cities on Nippon

  • Deserts
  • Badlands
  • Shores
  • Water


  • Wakoku (Honshu, Hokkaido, Kyushu, Shikoku, and Shima): Main continent, resembling the country of Japan on Earth.
  • Chūgoku: Second largest country on the Planet in terms of territory, part of the largest continent. Known for its traditionalism, including forests, grasslands, rice farms, and rivers flowing with mineral-rich water which causes them to take a yellow color.

    A view of Osaka, former capital of Nippon during the adventure group's earliest events

  • Kankoku (Hoku and Nan): Small nation branching off the main continent, bordering Roshia. Its North and South territories have been known to enter feuds and disputes about countless issues.
  • Roshia:Largest country on the Planet in terms of territory, part of the largest continent. Known for its harsh winters in the North, polar territories, and wide expanses of forests. Despite this, it is the most heavily industrialized country, which is struggling to catch up to the more modern technologies other countries have.
  • Betonamu: Medium sized continent near Wakoku.
  • Tochi: Large island which is relatively isolated in the main ocean.

Government -Coronation Ceremony

  • Machiko Tsuge: Prime Minister
  • Akira Emoto: Chief Cabinet Secretary
  • Kengo Kora: Executive Secretary to Chief Cabinet Deputy Secretary
  • Mikako Ichikawa: Minister of the Environmental Bureaucrat
  • Kimiko Yo: Minister of Defense
  • Sei Hiraizumi: Minister of Agriculture, Forestry and Fisheries
  • Kenichi Yajima: Minister of Land, Infrastructure, Transport and Tourism
  • Akira Hamada: Minister of Internal Affairs and Communications
  • Toru Tezuka: Minister of Education, Culture, Sports, Science and Technology
  • Arada Furuta: National Police Agency Commisionner-General
  • Moro Morooka: National Police Agency Criminal Investigation Bureau
  • Tetsu Watanabe: Deputy Chief Cabinet Secretary for Crisis Management
  • Taro Suwa: Disaster Prevention Division Director
  • Kanji Tsuda: Minister of Foreign Affairs Bureaucrat Official
  • Toru Nomaguchi: Minister of Economy, Trade, and Industry
  • Satoshi Matsuo: Vice Chairman of the Policy Affairs Research Council


  • Kamome
  • Oshima
  • Okushiri
  • Teuri
  • Rebun
  • Rishiri
  • Yagishiri
  • Notojima
  • Sado
  • Mitsukejima
  • Nanatsujima
  • Takashima
  • Odaiba
  • Heiwa
  • Izu
  • Amakusa
  • Itanjinmon




An advanced Racing sport held on populous Nippon worlds, Kinetica involves pilots wearing "Kinetic Suits" equipped with wheels on the hands and feet, speeding around a magnetized track at speeds maximizing at 350 miles per hour (560 km/h). The goal, as in any racing game, is to be the first to cross the finish line after a certain number of laps. Racers can perform stunts to power up energy in their suit which provides them a temporary boost. There are also crystals scattered across the tracks; yellow crystals enable a special ability after a certain number have been collected, and purple crystals provide the special ability with just one.

Bot Battle

Once an illegal activity, after several rules and restrictions were made on the sport the past-time of "Bot Battle" was made into an official sport. Incorporating the use of remote-controlled robots that fight each other to the last, the sport has gained quite the sense of popularity inside and outside of Nippon. There are several variations of the sport, including free for all, team battle, king of the hill, and capture the flag.


Many of Nippon's names comes from classic Japanese mythology or terms and names.