Tera CET: Blooming Period

In the 1980s, South Korea saw many people take to the streets in protest due to dissatisfaction with the dictatorial regime. However, the dictator of South Korea swept them away with cluster bombs and then even completed an artificial insemination project. Then, in the 2000s and 2010s, a resistance was finally established, and these resistance fighters eventually captured and dealt with the dictator. However, some citizens exploited these resistance fighters as slaves, leading to an enraged individual massacring the citizens. Eventually, one of the resistance fighters (Lee Taek-ho, though it is said that Lee Taek-ho was not the only one who massacred the citizens) was promoted to dictator. Thus, the dictator, through employing foreign talent and establishing a meritocratic society, came to rule not only North Korea but also many other countries. Eventually, he caught the attention of the United States and was stopped by US special forces, leading to the complete destruction of Seoul. Afterward, politicians established a new city called Gaehwa City near Sangju City and designated it as the provisional capital until Seoul could be recaptured.

List of ability users: Beings known for approximately 600 to 1000 years, they are said to exist worldwide at about 30% (Fighters, Espers, Technologists each at 10%, with the addition of the lowest tier, estimated to be around 60% in total).

Fighters: Primarily beings whose physical abilities are paramount, with other abilities being supplementary or non-existent.
Types
Physical Strongest: Beings who have surpassed normal levels solely through their physical bodies, capable of shattering rocks with their bare hands, throwing elephants, and toppling giraffes.
Ki Wielders: Beings who emit condensed aura from their bodies, which can be used to unleash energy, nullify abilities, create EMP effects, and possess enhanced visual acuity.
Genetic Anomalies: Beings with genetically altered bodies, causing them to gain weight from food, freely enhance their bodies, and even replicate impacts.

Espers: Wizards who toy with or attack opponents using magical or spiritual abilities.
Types
Elementalists: Beings who freely wield various natural elements such as fire, ice, electricity, and poison, but require corresponding heat or cold.
Dream Interpreters: Beings who can manipulate luck, command spirits, and even summon and shapeshift into shadows, nightmarish figures, and imaginary characters.
Life Researchers: Beings who control life-infused entities, including their own bodies, animals, plants, microorganisms, and even bacteria.

Technologists: Beings who modify their bodies or skillfully wield advanced inventions, sometimes even being mechanical themselves.
Types
Body Modifiers: Beings who enhance their abilities by modifying their bodies into cyborgs, strengthening their claws, or even implanting weapons within their bodies; they are addicted to modification.
Machine Empaths: Beings who possess skilled abilities in handling machines, whether they have consciousness or not. Furthermore, only the individual can properly handle these machines.
Complete Machines: Robots with minimal or no biological parts. Unless they are high-ranking, they rarely obey commands.

Ability Tier Limits
Lowest Tier: Unknown, presumably because their abilities are too minute to be visible.
Low Tier: Abilities become apparent from this tier onwards, with weak magic, body modifications, or enhanced physical capabilities.
Mid-Low Tier: Capable of defeating entire criminal organizations single-handedly.
Mid Tier: Capable of defeating elephants and giraffes single-handedly without significant self-damage.
Mid-High Tier: Capable of eradicating entire warlord organizations and large-scale criminal syndicates.
High Tier: Requires a full army battalion to properly counter.
Top Tier: Approximately 100 individuals worldwide. From this level onwards, the Earth itself may be in danger.

Public Order and Hero Groups
Gaehwa City Police Headquarters: An agency responsible for public order within Gaehwa City, with a considerable number of personnel. Park Il-ho, the team leader of Violent Crimes Unit 1, is a Muay Thai champion who loves superhero stories. Team leader of Unit 2, Lee Taek-wan, maintains a strict demeanor and wields power armor.
County Guys: A vigilante group unilaterally formed by police officer Kang Gye-jang, dedicated to taking down villains and rescuing the innocent. In reality, Kang Gye-jang punishes villains without mercy, and his subordinates do the same. Surprisingly, most members have ordinary occupations.
Note: Gaehwa City Police Headquarters considers the County Guys a dangerous group of heroes. Park Il-ho, in particular, described them as "a sandwich with fireworks inside." It is also said that the third child of the Palgeum Group voluntarily joined the County Guys. As a result, although they have a strained public relationship, they are quite close in private. In fact, when Kang Gye-jang was a leader of another team in the past, the two leaders of the Violent Crimes Unit were Kang Gye-jang's assistants, and Park Il-ho and Kang Gye-jang have a relationship akin to an uncle and nephew.

Famous Businesses
Palgeum Group: A company founded by Ms. Seon, specializing in the development of wheelchairs, prosthetic arms, and legs, with the motto "Everyone deserves a chance!" The name 八金 (Palgeum) refers to her children collectively. Currently, based on the eldest child's recommendation, the fourth child is in charge as the next chairman. (Incidentally, Ms. Seon's husband is a politician, and they are currently working together to retake Seoul.)
List of Children: Eldest Kim Tae-soo (Male, Fighter with strong physical strength and durability, bodyguard) → Second Kim Hyo-jeong (Female, Esper who communicates with and commands animals, veterinarian) → Third Kim Chae-won (Female, Esper who freely manipulates wind, motorcycle racer) → Fourth Kim Chae-hoon (Male, Technologist who commands a large mechanical dog, next chairman) → Fifth Kim Hye-joo (Female, Fighter with excellent movement tracking and throwing abilities, handball player) → Sixth Kim Hye-kyung (Female, Esper who enhances people's vitality and mood through singing, idol) → Seventh Kim Tae-yang (Male, Technologist who wields a hoverboard and auto gauntlets) → Youngest Kim Hyo-jin (Female, Technologist with a prosthetic left arm and a prosthetic right leg).
Note: The age differences from the perspective of the fifth child, Kim Hye-joo, are 7 years with Kim Tae-soo, 6 years with Kim Hyo-jeong, and 4 years with Kim Chae-won and Kim Chae-hoon (as the third and fourth are twins...). There is a 2-year difference with the sixth child, Kim Hye-kyung, a 3-year difference with the seventh child, Kim Tae-yang, and a 5-year difference with the youngest, Kim Hyo-jin.

Known Criminal Organizations
Guardians of Nature: An eco-fascist group with the ideology that humans, machines, and even intelligent beings must be eliminated to protect nature and animals. Espers are the majority (Main Ideology: Eco-fascism).
Human Fighters: A group that believes the world should consist solely of humans, distrusting all other beings and even enslaving those with special abilities. Fighters are the majority (Main Ideology: Human Supremacy).
New Human Developers: Individuals who modify humans into cyborgs or conduct genetic research to create superior beings, with highly dangerous drugs. Technologists are the majority (Main Ideology: Transhumanism).
Occult Maniacs: A group of dark mages who summon various yokai and monsters, causing chaos in the mortal world, characterized by their black robes. Espers are the majority (Main Ideology: Apocalypse).
Blast Gangsters: A biker gang that enjoys rampaging with motorcycles, using chains, bats, and fists. They are speed-freaks with a macho image. Fighters are the majority (Main Ideology: Hedonism).
C.I.M.E.V: A business entity known for mass-producing machines and weapons, in conflict with Palgeum Group, possessing many weapons of mass destruction and lethal machinery. Technologists are the majority (Main Ideology: Technocracy).
Heaven's Gate: A religion that believes the world has already ended and that death is liberation, blessing death and even sacrificing their own lives. Espers are the majority (Main Ideology: Thanatism).
Innocent Citizens: Believing that strength against the strong and weakness against the weak is justice, they treat the righteous well but torture, traffic, burn, and inject liquid oxygen into the wicked. Fighters are the majority (Main Ideology: Oppressing the Strong and Aiding the Weak).
Watch Service: A hacker-centric group that prioritizes information advancement, specializing in hacking and datafying people's minds and souls. Technologists are the majority (Main Ideology: Technologism).
Note: These 9 groups are unlikely to view each other favorably, especially due to their stark ideological differences. Furthermore, these 9 groups of criminal organizations are likely to exist not only in Gaehwa City but also across dimensions, i.e., globally. Naturally, considering that these are not the only criminal organizations, it is highly probable that these organizations are more than just criminal groups, potentially being warlords or terrorist organizations.

Unique Beings
Manufactured Humans: Beings born through artificial insemination rather than from parents, presumably created to combat low birth rates. They live without emotions until the age of 25, and their gender is not properly assigned, forcing them to fulfill their duty of national defense. Of course, if they develop emotions as infants or at some point in between, they are eliminated after verification if their emotions do not disappear. (Mainly produced by Technologists).
Ratsper: Rats that have acquired fire, ice, or poison abilities due to Esper powers, to the point where their size makes it impossible to tell if they are rats or capybaras. They are essentially beasts and will attack humans almost 100% of the time, so caution is advised. (Apparently created by Espers).
Yokai, Demons: Humanoid but strangely shaped beings that occasionally appear. Most are known to despise humans and are physically stronger than ordinary humans. They mock humans but are terrified when they witness a Fighter of Mid Tier or higher. (Summoned by Espers).
Humanoids: Robots that walk on two legs, controlled by AI. They usually integrate into human society, conversing, communicating, and fulfilling their duties, but there are many reported cases of them attacking humans for unknown reasons. (Created by Technologists).
Intelligent Animals: Primarily refers to animals capable of communication, such as parrots and gorillas. Many seem to have developed through research. While pets are manageable, wild animals occasionally deceive humans with words. (Both Espers and Technologists are the culprits).
Various other mutants, summoned angels, etc..

Setting: Gaehwa City
A city west of Sangju City (near which the Bongsan Seowon and Hyojajeong Jae-soo Memorial Hall actually exist). As Seoul weakened for unknown reasons, and nearby cities became difficult to function due to Seoul's weakness, the country eventually rebuilt it as a large city. Thanks to technological advancements, it was established by engineers in just about a year (despite the setting being around 2020). It has developed various amenities, agricultural and industrial zones, and tourist attractions, making it a solid foundation. Nevertheless, as expected of a country with relatively good public order, the level of public safety is not poor.

Behind the Scenes
Incidentally, the "Physical Strongest" among Fighters was actually a non-ability user. Genetic Anomalies were treated as Technologists, and Ki Wielders as Espers. However, about 300 years ago, it was confirmed that there was a surprisingly large number of these Physical Strongest individuals, leading to the reclassification.
Additionally, foreigners primarily use a "translation sensor set" attached to the front of the neck and behind the ear, which translates conversations. However, this once led Michelle to mistake a person from the Gyeongsang Province for an Irish person during a conversation.
Furthermore, in this world, Korea is a unified Korea. It also seems that in the past, in East Asia, Fighters were called martial artists, Espers were called sorcerers, and Technologists were called engineers.
At this time, the person who strengthened the military regime in Korea and dominated neighboring countries was a man named Lee Taek-wan's younger brother, Lee Taek-ho. However, after the dictatorship ended, he disappeared and is now in an unknown state, with the last news being that he was taken to prison.