Blue Star
Anime Crossover: Starting in Demon Slayer, but with the Heavenly Emperor Tiger TemplateContents
Contents
Biodata
| Feature | Details |
|---|---|
| Name | Blue Star |
| Original Name | 蓝星 |
| Alias(es) | Main World 328 |
| Type | Inhabited planet within a world connected to the Astral Realm 330 349 |
| Continents | Thirteen, each forming a distinct cultural region 1 |
| Inhabitants | Humanity 192 336 |
| Power System | Psychic Energy cultivation 1 |
| World Consciousness | Blue Star Consciousness, called Doumu by the Central Continent’s experts; a Fifth Tier existence 335 336 |
| Leadership | Lu You becomes its de facto highest authority after defeating the Divine Envoys 352 354 |
| Status | Independent of the Divine Envoys, but claimed by the Changming Clan 346 353 |
| First Appearance | Chapter 1 1 |
Power Progression
| Stage / Realm / Level | Chapter | Notes |
|---|---|---|
| Psychic Energy civilization established | 1 101 192 | Five hundred years before the opening, the Divine Envoys arrived through Star Gates and introduced awakening potions and Psychic Energy cultivation methods. |
| Fourth Tier human powerhouses | 100 329 | Kaguya Daoyin was among Blue Star’s earliest Fourth Tier cultivators. Breakthroughs made within Blue Star produce incomplete Fourth Tiers; complete breakthroughs require the Astral Realm’s rules. |
| First native Fifth Tier human | 328 336 | Amaterasu Kong completes her breakthrough during the resistance against the Divine Envoys. Blue Star’s spacetime shudders, its laws tremble, and humanity experiences an instinctive surge of joy. |
Geography and Locations
Blue Star has thirteen continents with separate cultural regions. Sakura State, where Lu You initially lives, resembles Japan from his previous life 1.
| Location | Details |
|---|---|
| Sakura Continent / Sakura State | Region dominated by the Academia, Star Gate, and Celestial God factions; the starting point of the conflict that leads to resistance against the Divine Envoys 102 193. |
| Fuyuki City | Lu You’s initial home. Second Tier cultivators already belong to the city’s highest ranks 1. |
| Fuyuki High School | Lu You’s workplace and Kaguya Daoyin’s base. Its Little Yellow Building is surrounded by layered barriers 1 100. |
| Kyoto City | Amaterasu Kong’s base and the intended center of her plan to provoke factional warfare. The Tower of the Sun serves as her residence during her recovery 193 346 347. |
| Tokyo | Location where Blue Star’s surviving powerhouses gather after the war to revise the systems they intend to implement 354. |
| Central Continent | Home to four supreme experts and dozens of Fourth Tier cultivators. Its mountains, rivers, grotto-heavens, and blessed lands support the Doumu Primordial Chaos Formation 335. |
| America | One of the regions containing a Star Gate used by the invading Fifth Tier Divine Envoys 335. |
| Devouring Abyss | A nearby region of nothingness beyond Blue Star’s world boundary. Amaterasu Kong compares its position relative to Blue Star to that of the moon 348. |
- Surrounding space: No other inhabited worlds are known within Blue Star’s surrounding space. Its destruction would force surviving experts to inhabit barren celestial bodies or leave through a Star Gate 332.
- Vulnerability: Fourth Tier combat can devastate the planet. During the factional war, experts collect shattered celestial debris to prevent it from striking the surface 330 332.
Star Gates
- Arrival: Star Gates descended five hundred years before the opening and became the entry points for the Divine Envoys 1 101.
- Connection: They provide access to the Astral Realm. Worlds possessing such gates are uncommon compared with the many sealed worlds beyond Blue Star 349 353.
- Distribution: Blue Star contains numerous gates. Travel from their shared interior can lead to a random gate on the planet, even for the Divine Envoys’ Fifth Tier leaders 334.
- Restricted access: The Star Gate Association forbids exploration in Sakura State. Other continents, including the Central Continent, have secured greater freedom to explore through their dealings with the Divine Envoys 103.
- Local permissions: Zhao Donglai uses the Star Gate Faction’s limited authority to return three invading gods to the gate’s interior, delaying them once 334.
- Fuyuki gate: The gate near Fuyuki City is approximately three kilometers wide and seven kilometers tall, with pale-purple light and star-speckled pillars. Lu You believes he cannot destroy it even with Fifth Tier combat strength 348.
- Postwar access: Lu You initially finds the Fuyuki gate shut down. Kaguya Daoyin directs him to Zhao Donglai, who possesses gate access privileges 348 349.
Blue Star Consciousness
Doumu
Blue Star’s world consciousness is a genuine Fifth Tier existence, unusually powerful for a world that had previously produced only Fourth Tier inhabitants 335 336.
- Rejection of invaders: The world resists the entry and presence of the Divine Envoys’ Fifth Tier gods 334 335.
- External suppression: The Divine Envoys bind Blue Star’s spherical world origin in black chains and monitor its fluctuations. Their Sealing and Suppression Device temporarily suppresses its consciousness so their gods can enter 332 333.
- Defensive manifestation: The Central Continent’s Doumu Primordial Chaos Formation connects to the consciousness and manifests a figure of light controlled by its four supreme experts 335.
- Historical disturbances: When Fifth Tier beings from the past attempt to interfere with the future, the enraged consciousness unleashes Heavenly Tribulation against them 337.
World-Origin Phenomena
- Breakthrough detection: Changes in the world origin allow the Divine Envoys to monitor major cultivation breakthroughs. Large-scale fighting disrupts that monitoring 332.
- Fourth Tier deaths: The death of a Fourth Tier powerhouse can cause blood rain and an involuntary sense of sorrow among inhabitants 331 333.
- Fifth Tier ascension: Amaterasu Kong’s successful breakthrough causes worldwide joy and disturbances in spacetime and natural laws 336.
Major Factions
The three-way factional balance described by Kaguya Daoyin primarily concerns the Sakura Continent, rather than a single government ruling all of Blue Star 102.
| Faction | Position and Influence |
|---|---|
| Academia Faction | Values rules and order. Mentor and Kaguya Daoyin belong to its ranks, and its experts support Amaterasu Kong’s breakthrough 102 334 338. |
| Star Gate Faction | Centered on the Star Gate Association; controls government appointments and administration in most Sakura Continent cities. Negotiates limited rights with the Divine Envoys 102 103 329. |
| Celestial God Faction | Advocates full alignment with the Divine Envoys’ civilization. Despite that doctrine, its fighters remain with humanity during the decisive battle 102 337. |
| Central Continent’s experts | Maintain their own arrangements with the Divine Envoys and ultimately deploy the Doumu formation against Qiong 103 335. |
History
Arrival and Exploitation
The Divine Envoys’ arrival transformed Blue Star into a Psychic Energy civilization. Public accounts portrayed them as outsiders who brought awakening and cultivation, but concealed the interests of the civilization they represented 1 101.
Amaterasu Kong later revealed that the Envoys treated humanity as food. They consumed promising cultivators to improve their chances of producing Fifth Tier gods, while earlier breakthrough attempts had disappeared from surviving records. Restricted gate access and tightly controlled knowledge helped preserve that dependence 192 329 333.
Amaterasu Kong’s Resistance Plan
Amaterasu Kong planned to turn Kyoto into a battlefield between the three major factions. The resulting chaos would force the Divine Envoys to intervene while masking her attempt to reach the Fifth Tier. She hoped success would give Blue Star enough strength to negotiate instead of remaining livestock 193 328.
The Academia and Star Gate factions’ fighting spread through the space around Blue Star. As the world origin became increasingly unstable, the Envoys’ monitoring failed to identify the breakthrough promptly. Once the attempt was discovered, Qiong, Yu, and Xing entered with orders to eliminate every Fourth Tier being on Blue Star 332 333 334.
War Against the Divine Envoys
The Central Continent’s experts trapped Qiong with the Doumu formation, while Mentor and a coalition of Fourth Tier cultivators delayed Xing. Their resistance bought time for Amaterasu Kong to complete her ascension 335 336.
Futu then led members of the Star Gate Faction away from Mentor’s defense, weakening his summoned Sacred Spirit. Zhao Donglai rejected her teacher’s surrender, but Xing slaughtered many of the remaining defenders. Amaterasu Kong burned her lifespan to fight all three enemy gods, leaving Blue Star close to defeat 336 337 338.
The Divine Envoys broadcast the battle worldwide to destroy humanity’s will to resist. Lu You intervened, exposed their predation alongside Amaterasu Kong, and defeated their three gods. The audience celebrated the victory as the surviving Envoys prepared to flee 340 342 345.
Independence and Reconstruction
Victory made Blue Star independent of the Divine Envoys, but left extensive casualties. Kaguya Daoyin cleared Fourth Tier remains from space because even their falling blood and flesh could cause catastrophic destruction. Lu You forbade territorial invasions and specifically prohibited attacks on the Central Continent 346.
Amaterasu Kong survived through phoenix nirvana, returning as a child without cultivation. While she rebuilt her strength, she agreed to safeguard Blue Star during Lu You’s exploration of the Astral Realm 346 347 348.
By the time leaders gathered in Tokyo to discuss future institutions, Kaguya Daoyin openly acknowledged Lu You as the person who called the shots on Blue Star 354.
Changming Clan Threat
The fleeing Divine Envoys spread information about Blue Star to attract other races. Lu You’s investigation identified the nearby Changming Clan as the principal threat, with a Fifth Tier Invincible powerhouse who had attempted to advance to Sixth Tier 351 352 353.
The Changming Clan declared Blue Star its property. Its record of transforming conquered worlds into specialized resource farms made that claim especially dangerous. The declaration discouraged nearby powers from interfering, but left Blue Star facing a potential takeover 352 353.
Amaterasu Kong proposed using a captured adventurers’ warship to seek assistance from the Astral Realm Human Race. Meanwhile, Blue Star mobilized to supply Lu You with Astral Realm collectibles that could support his pursuit of Fifth Tier invincibility 353 354.