RPG OC — The Warring States Era.

The Alliance to Restore the Empire, commonly known as the Rebel Alliance, Alliance, and Rebellion, was a resistance movement that opposed the rule of the Shōgun and the rise of the Daimyos, seeking to restore the Akatsuki Empire and return power to the central government. The Alliance was publicly and formally declared with the Declaration of the Rebel Alliance by the rebel Lady Mikadzuki Moe, who united various rebel cells into a common force against the Shogunate. In fact, the concept of a "Rebel Alliance" had its roots in smaller movements that sought to unite isolated cells, such as a movement secretly led by Empress Yamato Akemi herself and a rebel network formed by the revolutionary Lord and Daimyo Oohashiomori Takashi, who received funding and assistance from Empress Yamato Akemi. These initial groups and the Alliance that would eventually form emerged from various independent rebel cells. The Sengoku Resistance Group was one of the first cells to join what Akemi began calling the "Alliance" before the formal formation of the Alliance to Restore the Empire.

The Alliance and the cells it united were born from widespread discontent within the Shogunate among those who desired the restoration of the Akatsuki Empire. Their efforts were led by nobles and Daimyos from the Primarch clans, such as Empress Yamato Akemi, Lady Mikadzuki Moe, Lord Oohashiomori Takashi, and later, Imperial Princess Yamato Yukihime. Its members were either citizens of the Shogunate or deserters from the Shōgun's and Daimyos' armed forces.

Unlike a full-scale war, the Alliance waged an insurgency against the Shogunate, establishing small bases throughout Tairyūkoku instead of controlling an entire city at once.

The Alliance relies more on guerrilla warfare, sabotage, espionage, pro-Alliance propaganda, recruitment, in-depth knowledge of the terrain, and prolonged resistance from the population.

The current clans, created at the beginning of the fall of the central government, with no tradition for centuries, were born during the rise of the daimyos.

The clans are:

Kuwana clan, represented by the heraldic color: bronze.

Daimyo: Lord Kuwana Kei

Kaneshiro Clan, represented by the heraldic color: silver.

Daimyo: Lord Kaneshiro Junji

Zakimi Clan, represented by the heraldic color: dark green.

Daimyo: Lord Zakimi Shigeyuki

Iba clan, represented by the heraldic color: gray.

Daimyo: Lord Iba Yoshio

Uchikoga Clan, represented by the heraldic color: brown.

Daimyo: Lord Uchikoga Kentarou

Matsuo clan, represented by the heraldic color: cyan blue.

Daimyo: Lord Matsuo Hiromasa

Nishimoto clan, represented by the heraldic color: pink.

Daimyo: Lord Nishimoto Sei

Masui clan, represented by the heraldic color: orange.

Daimyo: Lord Masui Eisuke

Funamoto clan, represented by the heraldic color: green.

Daimyo: Lord Funamoto Katsumoto

Ilida clan, represented by the heraldic color: purple.

Daimyo: Lord Iida Seiho

Minato Clan, represented by the heraldic color: white.

Daimyo: Lord Minato Atsushi

Tsuchihashi clan, represented by the heraldic color: black.

Daimyo: Lord Tsuchihashi Iwao

Ono Clan, represented by the heraldic color: red.

Daimyo: Lord Ono Yoneo

Togawa clan, represented by the heraldic color: dark blue.

Daimyo: Lord Togawa Daisuke

Uchima clan (the clan that currently rules the shogunate), represented by the heraldic colors: black and yellow.

Shōgun: Lord Uchina Minoru.

Sōrādoragon

Clan Represented by the blood-red and imperial yellow colors, the Sōrādoragon clan embodies military power, courage, and martial supremacy.

His mon depicts a majestic red three-headed dragon on an imperial yellow background, symbolic of the clan's overwhelming strength and its ability to watch all directions of the battlefield simultaneously. The figure of the dragon also represents his ancestral connection to imperial virtues and glorious conquest.

Current daimyō: Lord Sōrādoragon Hideyoshi.

Hoshigan

Clan Represented by the colors black and violet, the Hoshigan Clan is known for its affinity for strategy, vigilance, and occult knowledge.

Its mon features a violet falcon in full flight accompanied by a crescent moon of the same hue, both arranged on a black background. The falcon symbolizes keen vision and precision, while the crescent moon represents mystery, wisdom, and the ability to act in the shadows without ever losing sight of your goals.

Current daimyō: Lord Hoshigan Hanzō.

Harada

Clan Represented by the colors light pink and white, the Harada Clan embodies the ephemeral beauty of life, the serenity and purity of samurai ideals.

Her mon consists of a delicate light pink sakura flower on a white background, a symbol of the transience of existence and the samurai principle of living with honor, even in the face of the inevitability of death. The emblem reflects the elegance and cultural sensibility that characterize the history of this illustrious lineage.

Current daimyō: Lord Harada Tsubasa.

Since the founding of the Great Akatsuki Empire, the Five Primarch Clans have remained the custodians of the imperial legacy, united by the ancestral oath to serve the God-Emperor and ensure Tairyūkoku's prosperity through the ages.

The Five Primarch Clans constitute the oldest and most revered samurai lineages of the Great Akatsuki Empire. Forged by the God-Emperor himself during the First Imperial Era, they were entrusted with the sacred mission of protecting, governing, and preserving the order of Tairyūkoku, the Great Imperial Supercontinent. Its patriarchs became the first daimyōs in the history of the empire, laying the political, military, and cultural foundations that endure to the present day.

Over the centuries, the Five Primarch Clans have consolidated themselves as symbols of honor, tradition and power, being recognized as the pillars of the imperial nobility. Each clan has its own heraldic colors, a distinctive mon, and a daimyō responsible for representing the will and interests of their lineage before the imperial throne.

Oohashiomori

Clan Represented by the heraldic colors black and white, the Oohashiomori Clan symbolizes the solidity, perseverance, and unwavering authority of the great mountains that guard the borders of the empire.

Its mon consists of two twin black mountains positioned in the center of a black ring, arranged on a white background, representing the duality between strength and balance, as well as the clan's undying commitment to Tairyūkoku's protection.

Current daimyō: Lord Oohashiomori Takashi.

Mikadzuki

Clan Represented by the turquoise and emerald green colors, the Mikadzuki Clan is traditionally associated with prosperity, wisdom, and harmony between nature and spirit.

Its mon is composed of a stylized paulownia flower in the traditional arrangement of five, seven and five leaves, represented in turquoise on an emerald green background. The emblem symbolizes the nobility of his lineage and his historical proximity to the administrative and cultural affairs of the empire.

Current daimyō: Lord Mikadzuki Sōjirō.

The Yamato Clan and the Imperial House of Tairyūkoku, also known as the Chrysanthemum Throne, is the oldest continuous monarchy in the world and, according to imperial mythology, was founded eleven thousand years ago by the legendary God-Emperor of Humanity, Yamato Hoshiyuki, who is considered the first emperor of Tairyūkoku.

The Yamato Clan is represented by the distinctive colors: Tyrian purple and gold. The Yamato Clan's Mon and the Akatsuki imperial seal feature a golden-yellow chrysanthemum with black lines. The central sphere is surrounded by a front set of sixteen petals. The back set of petals is partially covered by the front set, being visible at the edges of the flower, against a Tyrian purple background.

Members:

Emperor Yamato Ichirō: A forty-six-year-old man, considered the heir, but weak and submissive to the Great God-Emperor of Humanity, known as "The Shōgun's Little Dog".

Empress Yamato Akemi: A forty-five-year-old woman, married to Emperor Yamato Ichirō since she was seventeen. Akemi was once a legendary Onna-Bugeisha (female warrior). Currently, Empress Akemi is the secret leader of the rebel alliance against the Shōgun and seeks to restore the power of the Yamato Imperial House.

Despite appearances, Empress Yamato Akemi is sweet, warm, and deeply affectionate. She acts as the nurturing "mother figure" of the group, constantly worrying about the physical and mental well-being of everyone she truly cares about.

Imperial Prince Yamato Shuzo: An eighteen-year-old crown prince, the eldest son of Emperor Yamato Ichirō and Empress Yamato Akemi. A celebrated young samurai who strictly follows Bushido, known for his explosive temper and strong personality.

Imperial Princess Yamato Yukihime: A seventeen-year-old girl, the first daughter of Emperor Yamato Ichirō and Empress Yamato Akemi, known for her rebellious and unconventional personality, mocking and always with a sharp and venomous answer on the tip of her tongue.

Before attaining the enlightenment necessary to advance from one realm to the next, every Cultivator must go through the twenty States of the "Higher Self," progressive stages that symbolize their physical, energetic, and spiritual improvement. Only those who fully complete these twenty states are considered worthy of transcending their limitations and reaching a higher level of cultivation.

The hierarchy of the Three Kingdoms is composed of:

• Celestial Kingdom;
• Immortal Kingdom;
• Earth Kingdom.

Although the Heavenly Realm represents the highest known stage of cultivation, very few individuals in all of history have been able to achieve it, and they are often revered as living legends or entities close to the divine.

However, not all Cultivators exclusively follow the path of martial arts. Many dedicate their lives to the study of Alchemy, becoming Potion Preparers, Alchemists, spiritual masters, and scholars of the mystical properties of Chi/Chakra. These practitioners are responsible for developing techniques capable of complementing and enhancing energy cultivation.

In the world of Tiānxià Guó, society is deeply grounded in the arts of Chi/Chakra Cultivation and Alchemy, considered the pillars of the spiritual, physical, and mystical development of its inhabitants. Since time immemorial, it has been believed that all forms of life have been permeated by Chi/Chakra, a primordial, subtle, and fluid energy that connects the body, mind, and spirit to the very flow of the universe.

Individuals who dedicate their lives to mastering this energy are known as Cultivators. For them, the Chi/Chakra is not only a source of power, but the manifestation of the vital essence that sustains all existence. Its cultivation requires absolute discipline, years of physical and mental training, and a deep understanding of the balance between the material and spiritual worlds.

The vast majority of Cultivators are martial artists who are dedicated to the collection, refinement, and circulation of Chi/Chakra in their own bodies. Through meditation techniques, breathing exercises, body purification, and martial training, they direct their consciousness inward, learning to perceive subtle manifestations of this energy, often described as sensations of warmth, tingling, lightness, and spiritual fullness. Once perceived, the Chi/Chakra can be guided by the will of the practitioner, strengthening their physical capacities, expanding their perception and gradually raising their state of existence.

The path of cultivation is divided into three great spiritual realms, which represent different stages of evolution and enlightenment. Each realm symbolizes a fundamental transformation of the body, soul, and understanding of the universe. Ascension among them is only possible after the complete domination of the previous kingdom.

Parallel to the monetary system, the Koku represents the main unit of wealth in the kingdom. More than a simple agricultural measure, it serves as a reference for the evaluation of the value of the land, the tax collection of the feudal domains and the economic capacity of each province.

A single Koku corresponds to approximately 180 liters, or about 150 kilograms, of rice or grains — an amount considered enough to feed an adult for an entire year. As a result, Koku became the basis of the system of remuneration for samurai and civil servants. Often, their salaries are paid partially or in full in rice or in their economic equivalence, reflecting not only their hierarchical position but also the prosperity of the state and its respective feudal lord.

In this context, the true wealth of Tiānxià Guó is not measured exclusively by the gold accumulated, but by the ability of its lands to produce food, sustain its warriors, and ensure the stability of the kingdom.

Tiānxià Guó's economy is underpinned by a trimetallic monetary system composed of gold, silver, iron, and bronze, coexisting with a wealth system based on agricultural commodities, known as Koku. This economic model reflects the agrarian and feudal nature of the state, in which both currency and agricultural production play key roles in political and social organization.

All metal coins have a standardized design: they have a circular shape and a square hole in their center, a feature that allows them to be grouped into cords for easy storage and transport. The coins are classified as follows:

• Wuzhu — bronze coins;

• Zeni — iron coins;

• Yuanbao — silver coins;

• Ryo — gold coins.

The official conversion rates are established by the Shogunate and follow the following proportion:

• 1 gold ryo = 50 silver yuanbao;

• 1 silver yuanbao = 50 iron zeni;

• 1 Iron Zeni = 50 Bronze Wuzhu.

Bronze and iron coins are used in everyday transactions, and are usually grouped into bundles of 100 or 1,000 units to facilitate their use in local commerce. Silver and gold coins, on the other hand, are reserved for payments of great value, tax collection, commercial agreements and demonstrations of economic prestige, constituting important indicators of wealth among the great feudal lords and the high-ranking samurai.

Education is considered a privilege in Tiānxià Guó. Although the printing press exists and is widely known, its use is strictly controlled by the central government, which regulates the production and circulation of written knowledge. As a consequence, literacy remains restricted to the highest layers of society.

Only individuals belonging to the most prestigious social classes—such as samurai, daimyo, and members of the aristocracy—have broad access to formal education. Together, these groups represent about 15% of the population, or even less. A small portion of the plebeians can also become literate, especially merchants and artisans prosperous enough to pay for their own education or that of their descendants. For the vast majority of the population, however, knowledge remains a rare and highly valued resource.

Samurai enjoy exclusive legal privileges. They have the right to bear arms in any place and, in certain circumstances provided for by current laws, they can execute commoners who show them serious disrespect or attack their honor. Their social and military position gives them significant authority within the order established by the Shogunate.

Although the katana is widely recognized as the symbol of the samurai warrior, it is not his main combat weapon. Because they are traditionally mounted warriors, samurai most often use the yumi (Japanese longbow) and the naginata (polearm with a curved blade), which offer greater range and efficiency on the battlefield. The katana is considered a secondary weapon, used mainly in close-range confrontations and valued for its practicality, since it can be carried much more easily in urban environments and official ceremonies than a bow or spear.

Family Structure and the Role of Women

Society has a strongly patriarchal character. Women are legally subordinate to male authority, being considered members of the family nucleus of their fathers, husbands or legal guardians throughout life.

Male polygamy is widely accepted and socially legitimized, allowing high-status men to own multiple wives and concubines. The number of wives often serves as an additional symbol of political and economic prestige among the wealthier classes.

Marriages have a strong political and patrimonial character, being used as instruments for the consolidation of alliances between families and noble clans. By virtue of the influence of the principles of Divine Illumination, incestuous unions are, as a rule, condemned by society. However, certain forms of consanguinity are culturally tolerated, especially when they favor dynastic interests. Marriages between cousins and half-siblings, for example, are generally considered acceptable in various social circles, especially among the aristocracy.

Political and Philosophical
Organization
The social order is grounded in the teachings of Divine Enlightenment, a philosophical and religious system that combines elements of Confucianism, Taoism, Legalism, and Shinto. Its principles preach discipline, honor, duty, individual merit and social harmony, officially presenting itself as the basis of an enlightened and meritocratic society.

In practice, however, such ideals are rarely applied equally. The highest echelons of government are deeply marked by nepotism, political corruption, and constant disputes between large aristocratic clans. There are no effective mechanisms for accountability to the population, and the maintenance of power often overrides the philosophical principles that legitimize the state.

The governmental structure is rigidly hereditary. The main administrative, military, and political positions are traditionally passed down within the same clans over the generations. Still, marriage alliances, political intrigues, conspiracies, and succession disputes are part of the daily life of the nobility, allowing certain clans to expand or reduce their influence over the central government.

• Peasants – Considered the pillars of the productive economy of the empire, they are responsible for agriculture, mining, extraction of natural resources and other activities related to primary production. Despite their low social position, they are seen as honorable workers for materially sustaining society.

• Artisans – Blacksmiths, carpenters, masons, craftsmen and other professionals specialized in the manufacture of goods and tools. Although indispensable for the functioning of the empire, they are socially despised. According to the traditional view of Divine Illumination, artisans only transform raw materials produced by the work of others, which makes their occupation less virtuous than the direct production of the resources used.

• Merchants – Responsible for the circulation of goods and wealth, they occupy one of the lowest social positions in the hierarchy. Many consider them opportunists or "economic parasites", since they make a profit on products made or grown by other social classes. Their financial wealth, when it exists, rarely translates into political or social prestige.

• Outcasts – The most marginalized stratum of society. It includes criminals, beggars, and individuals who exercise professions considered impure, degrading, or morally undesirable. Among them are butchers, funeral directors, cesspool cleaners, executioners, prostitutes, itinerant artists, actors and other trades associated with social marginality.

Social

Structure Society is organized according to a rigid political-social hierarchy, strongly influenced by the principles of Divine Enlightenment. Each stratum has well-defined duties, privileges and limitations, and social position is one of the main factors that determine the rights, responsibilities and prestige of an individual.

• Emperor and Imperial Family – They play a primarily symbolic and religious role, being considered the personification of the legitimacy of the State. The Imperial Family is composed of the Empress, the Prince and the Crown Princess, in addition to the other princes and princesses belonging to the imperial lineage.

• Shōgun – Holder of effective political and military power in the country, acts as supreme ruler on behalf of the Emperor. It is up to the Shōgun to manage the government, command the military, and maintain the internal stability of the kingdom.

• Daimyō – Great feudal lords responsible for the administration of their respective domains. Its nobility is subdivided into different aristocratic titles, such as Duke, Marquis, Count, Viscount and Baron, each of whom has different degrees of authority and political influence.

• Samurai – They constitute the warrior caste of the empire. They are responsible for the protection of their masters and for compliance with the moral and military code in force. Its apprentices are trained from youth in martial arts, military strategy, philosophy and courtly etiquette.

• Rōnin – Samurai who have lost their masters or been stripped of their titles and duties. Without an established bond of loyalty, many become mercenaries, adventurers, bodyguards, or even criminals, depending on the circumstances that led them to their condition.

• Ashigaru – Soldiers recruited from the popular layers of society. Although they occupy a lower position than the samurai, they represent a fundamental portion of the state's military power, acting as infantry and auxiliary troops in times of war.

The beastmen, in turn, constitute an anthropomorphic race that shares numerous physical and biological characteristics with humans, distinguished mainly by their animal traits. They may have ears, tails, fangs, horns or antlers, depending on their lineage or genetic heritage. Such characteristics manifest themselves differently among individuals: some have only animal ears, others only tail, while certain specimens have both characteristics simultaneously. There are also those that exhibit additional traits, such as horns or antlers, making the appearance of the beastmen extremely varied.

Its animal characteristics encompass a wide diversity of species, including felines, canids, foxes, wolves, rabbits, mice, and countless other lineages existing in the world. This diversity contributes to the cultural and aesthetic richness of the breed, whose identity is not defined exclusively by appearance, but also by the traditions developed throughout its history.

Although they are less adaptable than humans, beastmen demonstrate a remarkable ability to thrive in different environments and can be found in virtually every inhabited region of Tiānxià Guó. One of its greatest particularities is its longevity: its average life expectancy varies between 150 and 200 years, and can exceed twice the human life expectancy under favorable circumstances.

Physically, both breeds have very similar body proportions. The average male height is approximately 1.63 meters (5 feet 4 inches), while the average female height is about 1.50 meters (4 feet 11 inches). These measures are considered the population standard for both humans and beastmen, and there are naturally individuals who are above or below this average.

In Tiānxià Guó, two great intelligent races coexist: humans and beastmen. Despite occasional episodes of prejudice and racial discrimination between some groups, the coexistence between them is predominantly peaceful and marked by centuries of cultural, social and economic coexistence.

Humans are recognized for their extraordinary ability to adapt to the most diverse environments and ways of life. Present in practically all regions of the world, they stand out for the versatility of their societies and the ease with which they assimilate different customs and cultures. Its average life expectancy is between 80 and 100 years, varying according to environmental conditions, medicinal advances and the standard of living of each community.

Harukiyo is the largest metropolis on planet Earth, home to more than 37 million inhabitants in its metropolitan region, being recognized as one of the largest urban, cultural and economic centers in the world.

Administratively, the metropolis is divided into several territorial units that make up its vast urban extension:

• - 23 Special Districts, which form the central and most prestigious area of the capital;

• - 26 metropolitan cities, located predominantly in the western portion of the urban territory;

• - 5 satellite municipalities, responsible for the administrative and economic support of the metropolis;

• - 8 imperial villages, located in the peripheral regions and intended for historical, agricultural and cultural preservation.

Among the Special Districts, some of the most emblematic of the capital stand out. Hwangseong District is home to the majestic Imperial Palace and the main government buildings of the Empire, and is considered the political heart of Harukiyo.

Another widely known district is the famous Red Lights District, considered one of the largest entertainment hubs in the world. Its streets are illuminated uninterruptedly by thousands of lanterns and illuminated signs, bringing together an impressive variety of establishments, including restaurants, bars, nightclubs, theaters, entertainment houses, houses of prostitution, themed hotels, love hotels, massage parlors, host clubs, hostess clubs and numerous cultural and commercial centers dedicated to nightlife.

Harukiyo is not only the capital of the Great Akatsuki Empire; it is the materialization of its identity, its political philosophy and its civilizing ambition. Every stone of its walls, every monumental avenue and every carefully planned garden testify to the splendor of an empire that seeks to eternalize its greatness through the very city that represents it.

Woods, gardens, and public squares are distributed at regular intervals, popping up approximately every six blocks. This organization provides visual balance, environmental comfort and architectural harmony to the urban space, establishing a refined relationship between nature and the monumentality of the city.

Harukiyo is also organized into specialized sectors, intended for specific administrative, diplomatic and commercial functions. Among them are the Imperial Hotel Sector, the Banking Sector, the Embassy District and various governmental and cultural centers, designed to optimize the administration of the capital and reinforce its strategic importance in the international scenario.

Its architecture is deliberately grandiose and monumental, combining influences from the most sophisticated architectural traditions of the East. From Chinese styles, it inherited bilateral symmetry, the application of feng shui principles, the appreciation of open and closed spaces, and the numerous cosmological and mythological references present in its urban composition. From the Korean tradition, it incorporated architectural naturalism, the elegance of simple forms and the aesthetic balance obtained by the rejection of ornamental excesses. From the Japanese architectural schools, it adopted structures raised from the ground, the predominant use of wood in traditional buildings and the characteristic sloping roofs, whose beauty harmonizes functionality and sophistication.

The entire capital was conceived with a clear purpose: to eternalize the glory of the Great Akatsuki Empire. Its palaces, temples, monuments, and government buildings were erected to inspire admiration, reverence, and respect, transforming the cityscape itself into a permanent manifestation of imperial authority.

The city of Harukiyo is one of the largest, most influential, and most celebrated metropolises of the Great Akatsuki Empire, situated in the heart of the vast plains of the Tenkoku region. Known throughout the continent by the epithet "The City of Tomorrow", Harukiyo represents the political, cultural, economic and administrative center of the Empire, symbolizing the prosperity and grandeur of the Akatsukian civilization.

Glorious and imposing, the imperial capital was conceived under a strict ideal of urban planning, becoming the maximum expression of a political, aesthetic and symbolic vision of imperial power. Each avenue, building, and public space has been designed not only to meet the functional needs of its inhabitants, but also to reflect the philosophical principles and absolute authority of the Great Akatsuki Empire.

Harukiyo's urban planning policy evidences a meticulous control of space and the organization of public life. Its residential districts are distributed in extensive carefully delimited areas, while monumental avenues cross the city on strategically calculated axes, connecting the main administrative, cultural and commercial centers.

The structure of the capital follows a geometric layout of remarkable precision. Seen from above, the city takes the form of a large perfect square, whose central historic axis is cut by elaborate diagonals that form geometric patterns inspired by pyramids and monumental rhombuses. Such a provision not only has an urban function, but also carries deep cosmological and political symbolism, representing the order, stability and supremacy of imperial power.

The progressive weakening of the central government and the authority of the shōgun paved the way for the rise of feudal lords — the daimyos — and their respective clans, who began to dispute territories, political influence, and military supremacy in numerous war campaigns. As a result, the Yamato imperial family was gradually stripped of its former governmental prerogatives, being relegated to a strictly symbolic, cultural, representative, and ceremonial role.

Today, the imperial family remains the embodiment of the state and the unity of the people, exercising the function of guardian of the empire's millennial traditions. The monarch, as head of state, maintains a politically neutral position, refraining from interfering in internal conflicts and preserving his legitimacy before all the contending factions.

The Great Akatsuki Empire is therefore experiencing an era of profound political and economic instability. Palace intrigues, betrayals within the court, ephemeral alliances and incessant conflicts between the daimyōs shape the contemporary scenario of the empire. Entire provinces are consumed by war, while old pacts are broken in the name of ambition and power. In the midst of the chaos, many believe that the Era of States at War is nearing its conclusion; Others, however, fear that it represents only the prelude to the definitive fall of a civilization that has lasted for more than eleven thousand years.

In Tairyūkoku, there is only one great organized civilization: the Great Akatsuki Empire, one of the oldest and most enduring political-cultural structures ever established in the world. Founded more than eleven thousand years ago by the God-Emperor of Humanity, Yamato Hoshiyuki — patriarch of the Yamato clan and founder of the homonymous imperial family — the empire has consolidated itself as the greatest political, military and cultural power on the continent over millennia of history.

Its capital is Harukiyo, the Eternal City of the Empire, erected by the God-Emperor himself during the early days of civilization in the heart of the plains of the Tenkoku Region. With approximately 82,400 square kilometers of territorial extension and an estimated population of 37 million inhabitants, Harukiyo represents the beating heart of the Great Akatsuki Empire. Recognized as the main political, economic, cultural and diplomatic center of the nation, the city dictates trends that reverberate throughout the imperial provinces, harmonizing ancestral traditions with the plurality of peoples, cultures and customs that make up the empire.

Harukiyo is home to the most important state institutions, including the seat of the central government, the financial heart of the empire, and the official residence of the Yamato imperial family, the majestic Edo Imperial Palace. Her influence transcends political boundaries, making her a symbol of her own imperial identity and the historical continuity of humanity in Tairyūkoku.

However, despite its grandeur and longevity, the Great Akatsuki Empire is going through one of the most turbulent periods in its history. The nation is plunged into a devastating civil war, known as the Era of Warring States, a period marked by the fragmentation of central power and the growing dispute between the great feudal houses.

Tiānxià Guó

Planetary Poles The geographical extremes of the planet are known by the following traditional names:

• Tenkyoku — Planetary North Pole;

• Meikyoku — Planetary South Pole.

Both are regions of fundamental astronomical and climatic importance, responsible for the dynamics of atmospheric and ocean currents that shape the environmental balance of the entire planet. Its extreme landscapes, shrouded in unique natural phenomena, are among the most mysterious and unexplored places in Tiānxià Guó.

The climatic distribution of the supercontinent is equally diverse:

• North — subarctic climate;
• Northeast, a temperate mountainous climate
• Northwest — cold continental and desert climate;
• Central — fertile temperate climate;
• Midwest — climate of large temperate forests;
• Central-East — humid temperate climate;
• Southeast — tropical maritime climate;
• Southwest — alpine and mountainous climate;
• South — subtropical volcanic climate.

This immense continental landmass concentrates most of the population of Tiānxià Guó, constituting the main political, economic, cultural, scientific and magical center of the planet.

Tairyūkoku is divided into nine major geographical and cultural regions:

• Hyōryū (Northern Region) — characterized by eternally snowy mountains, gigantic pine trees, frozen lakes, and Northern Lights. Its inspiration refers to the landscapes of northern Japan and the Korean Peninsula.

• Seikazan (Northeast Region) — composed of imposing mountain ranges, ancient temples, cool-climate bamboo groves, and extensive groves of white cherry trees.

• Kokuen (Northwest Region) — formed by vast steppes, monumental canyons, cold deserts, and volcanic territories inhabited by traditionally nomadic peoples.

• Tenkoku (Central Region), the political and cultural heart of the supercontinent. It is home to the largest fertile plains, great rivers, imperial palaces and the most important centers of knowledge and research.

• Ryūjin (Midwest Region) — home to millennia-old forests, colossal trees, and sacred lakes, as well as numerous legends associated with ancestral spirits and mystical creatures.

• Hanamori (East-Central Region) — known for its flowering sakura forests, crystal-clear rivers, rich medicinal biodiversity, and imposing monasteries dedicated to spiritual and philosophical study.

• Suiryū (Southeast Region) — composed of extensive archipelagos, lush tropical forests, paradisiacal beaches, and large maritime cities dedicated to trade and navigation.

• Gensei (Southwestern Region) — characterized by mountains shrouded in permanent mists, natural hot springs, and territories considered sacred by the ancient monastic orders.

• Yōkazan (Southern Region) — formed by dense subtropical jungles, active volcanoes, extensive rice paddies, and ruins belonging to long-vanished ancient civilizations.

Most of the planet's surface is made up of deep oceans and interconnected by gigantic sea currents responsible for global climate regulation. Despite this, Tiānxià Guó is home to a single, colossal supercontinent called Tairyūkoku, whose territorial extension is estimated to be between 2 and 3 billion square kilometers.

The supercontinent has approximately 55,000 to 70,000 kilometers in its North-South extension and between 65,000 and 90,000 kilometers in its East-West extension, housing numerous biomes and climatic zones simultaneously.

Among its geographical characteristics are:

• Permanent glacial regions;
• hot and cold continental deserts;
• mountain ranges that extend for tens of thousands of kilometers;
• primordial forests of monumental dimensions;
• vast inland seas;
• hundreds of unique and highly diverse ecosystems.

In addition to its moons, Tiānxià Guó has a magnificent planetary ring system composed of three large orbital structures, separated by extensive natural divisions. Across much of the planet, these rings have an apparent inclination of approximately 15° to the celestial horizon, making it one of the most impressive astronomical phenomena visible to the naked eye.

The rings are described as follows:

First Ring — Shirogane no Wa (Inner Ring)

Composition:

• Extremely pure ice crystals;
• white silicates;
• Highly reflective mineral dust.

Characteristics:

• It has an intense silvery-white color;
• reflects the light of its star and both moons;
• it acquires golden hues during dawn and dusk;
• It can be observed even during the day in open sky regions.

Second Ring — Ryūseki no Wa (Middle Ring)

Composition:

• Blue quartz;
• natural sapphire fragments;
• minerals rich in magnesium and aluminum;
• bluish space dust.

Characteristics:

• It has a bright light blue hue;
• in certain seasons, it produces a soft bluish glow noticeable in the night sky;
• visually harmonizes with the planetary epithet "The Blue Jewel", making it one of the natural symbols of Tiānxià Guó.

Third Ring — Kōkin no Wa (Outer Ring)

Composition:

• Iron;
• nickel;
• microscopic metal particles;
• minerals rich in gold and copper.

Characteristics:

• It has a reddish-golden appearance;
• it shines brightly during sunset, taking on shades ranging from amber to copper;
• produces a magnificent chromatic contrast with the two inner rings.

Tiānxià Guó has two main natural satellites—predominantly rocky and mineral moons—that have orbited the planet stably for millennia. Both exert a profound influence on the tides, the planetary calendar, and numerous cultural traditions developed throughout history.

The satellites are distinguished by their exceptional luminosity, dominating the celestial landscape at night and being visible over much of the planet.

They are:

• Tsukiryū — a silvery-white moon, surrounded by a delicate bluish glow that gives it a serene and majestic appearance.

• Yomikage — a black moon for most of its orbital cycle, taking on purple and crimson hues when it reaches its full phases, creating a singular spectacle in the firmament.

Tiānxià Guó is a rocky planet with an axial tilt ranging from 28° to 32°. Located in the middle region of the spiral arms of its galaxy, it is approximately 200,000 kilometers in diameter and is widely known as "The Blue Jewel", a title given to it because about 70% of its surface is covered by vast oceans of liquid water.

Its geological and atmospheric composition favors the existence of an extraordinary diversity of life forms, making it one of the most exuberant and habitable worlds in its star system.

Among its main planetary characteristics, the following stand out:

• Breathable atmosphere, rich in nitrogen and oxygen, capable of sustaining a wide variety of terrestrial and marine ecosystems.

• Extremely diverse solid surface, composed of colossal mountain ranges, extensive plains, deep valleys, continental deserts, ancestral forests and permanent glacial regions.

• Approximate shape of a geoid, presenting as a slightly flattened spheroid at the poles as a result of its rotation.