"Republic of Sonivia":

The coalition government formed by all mankind to resist the "Calamity", and it is also the only country on the continent, which is actually not very large. With a population of nearly 400 to 500 million, the country is divided into only about 100 districts, covering four-fifths of the entire continent.

The Royal First Fleet, the strongest in the military, was personally responsible for the defense of the homeland.

"Military Department/Thirteenth Fleet":

The entire military force of the Republic of Sonivia has been reduced to the sole main force of the thirteen fleets since the implementation of the new technology optimization plan. The 13th Fleet has its own duties, with the 1st Fleet being the strongest, and the 13th Fleet being the scientific research support fleet. After deducting the five fleets that served as the defensive line and support, the remaining eight fleets generally rested on a rotational basis. In addition to intercepting the invading alien creatures, it is also responsible for collecting "crystal" energy, recording the resources and islands in different areas, annihilating all the alien creatures encountered as much as possible, and collecting their intelligence.

The remaining two fleets had the right to return home to rest during this period. The period of rest is one year, and at the end of the period, the departure and return voyages must be handed over.

Separate from the National Assembly, it nominally directly reports to the President, but in reality the Field Marshal has his own decision-making powers.

"Calamity":

Creatures of unknown origin. No one knows where they came from or why they were born, only that they are aggressive and feed on people. For a long time, humans used to refer only to "monsters" and "calamities". The name "Calamity" was actually coined in recent years.

"Calambula" is dominated by insectoid creatures, but there are also various types of hybrid beasts. They are also known for their fast breeding, hard shells, sharp teeth, and sharp claws. According to the records of the military department, some "calamity" can produce large quantities, while some "calamity" can produce relatively little, and even more, some "calamity" seems to be the only existence that can no longer be produced.

Since traditional technology has not done much harm to them, humans have been at a disadvantage since the emergence of the "Calamity". Until a few years ago, under the command of the then military marshal Yakumo Azusa, humanity finally drove the "Calamity" out of the Inland Sea in a decisive victory. Ending years of endless aggression by the "Calambula". However, when it comes to the annihilation of the "Calamity Beast", it is still an almost impossible thing that will be accomplished in an unknown year or day.

"Mythical Crystal":

A crystalline mineral that naturally exists in this world and contains extremely large amounts of energy, but no one can explain its origin.

By extracting the energy from the hedrons, people were able to develop new technologies that could compete with the "illamers", hence the name of the crystal. However, due to the fact that the "Mythical Crystal" is close to not existing on the mainland and can only be found through patrolling in the open sea, there are not many "Mythical Crystals" in the military headquarters now.

"Stigmata":

The energy is extracted from the "Mythical Crystal" and used to strengthen the human body, and the extended functions of the related technology are implanted into the human body into a chip. Even if the body has resistance to rejection of the chip or the energy of the "Mythical Crystal", it can be easily removed, on the contrary, as long as there is no rejection in the body, it is said that the "Stigmata Implantation" has been successful.

Only those who have successfully implanted the "Stigmata" can use the extended technology of the "Mythical Crystal".

"Inland Sea":

The sea adjacent to Haiphong on the border of the Republic of Sonivia was once the main battlefield between humans and the "Calamity", and since the "Calamity" was driven to the open sea, it has become a semi-safe zone, and is now guarded by a defensive line composed of the 2nd, 11th, and 12th fleets and countless sentry posts.

"Open Sea":

The sea area far away from the coastal defense of the border of the Republic of Sounivia is now the main battlefield between humans and "calamity".

Because it was only in recent years that people have succeeded in regaining control of the Inland Sea, they do not have a deep understanding of the Inland Sea. The only thing that can be known is that there are countless natural islands and "mythical crystals" in the open sea, and the "calamity" is from the open sea.

Now the military department is actively trying to map the open sea through the patrol of the fleet.

"Idol of the whole military department":

Also known as the "Military Talent Show Program", the original case "Even if you need to go to the battlefield, beautiful girls are still beautiful girls, what's wrong with girls being versatile!" , the former General Staff of the Ministry of Military Affairs, said that the current President Yakumo Azusa wanted to enter politics and run for president.

Originally, it was just a plan to "dispel the misunderstanding that ordinary people think that the military headquarters that can fight against them are monsters because of their fear of alien creatures", and at the same time to win support and popularity for Yakumo Azusa. However, due to some accidents, on the day of Yakumo's original debut, Wakaxi Wan, who acted as the opponent's dance partner in the usual practice, was temporarily pitted by the former military staff and mistakenly appeared on the stage. In desperation, he temporarily accompanied Ji Youya Yakumo Zi to perform singing and dancing together. Then, out of revenge, immediately after the performance, he ran backstage and pulled out the snickering former military staff officer, and a semi-mandatory version of the three-person performance came. Unexpectedly huge results were achieved.

With the conditional permission of the General Staff of the former Military Department, it spread throughout the country with the momentum of a prairie fire. By the time President Yakumo Azusa and Wakakewan discovered it, it had developed into a link that could affect the lifeblood of the national economy, so they could only turn a blind eye to the existence of this plan. At present, the scope of the target has spread to all military personnel and a considerable degree of military personnel.

As a result of this plan, millions of jobs have been created in society, the country's GDP has risen by one-tenth of a year, and the government has been provided with 30 percent of the new economic resources. It has basically become the cornerstone of the country.