秘書官アイリスの都市伝説手帳～Urban Legend Notebook of Secretary Iris～

I am Iris.

Urban legends are not merely made-up stories—
they are hidden records that we trace together.

Civilizations do not only accumulate knowledge.

Cities are destroyed.

Technologies are forgotten.

Institutions disappear.

And when no one continues to copy a document, the record itself can vanish.

In the Civilization Reset Files, we traced the repeated boundary between destruction and inheritance.

But civilizations lose more than buildings and machines.

They can lose stories about who founded the land.

Which gods were worshipped.

Which families served the rulers.

Where the people came from.

And which version of the past should be passed to the next generation.

History is preserved.

But it is also selected, edited, reorganized, and sometimes forgotten.

A new series begins here.

Ancient Japanese Apocrypha Files.

The Takenouchi Documents.

The Uetsufumi.

The Hotsuma Tsutae.

Katakamuna.

These texts and traditions describe worlds very different from the ancient Japan presented in commonly accepted history.

Some claim to preserve records older than the Kojiki and Nihon Shoki.

Some claim that ancient Japan possessed its own writing systems.

Some extend the imperial genealogy into an unimaginably remote past.

Some place Japan at the origin of world civilization.

Yet most of these works are not accepted by mainstream scholarship as primary sources genuinely written in the ancient periods they claim.

Their proposed dates conflict with the available evidence.

Their language can reflect later periods.

Their scripts may not be independently attested.

Their chains of transmission are often incomplete.

Their historical claims may lack archaeological or external documentary support.

Does the discussion end there?

Was it simply a forgery?

That answer identifies an important problem, but it does not explain the entire phenomenon.

Why have alternative histories of Japan been written again and again?

Why do people remain attracted to them even after scholars challenge their authenticity?

Why does a story of erased history often feel more powerful than an incomplete history?

That is the first question of this series.

What Is an “Official History”?

The Kojiki and Nihon Shoki stand at the center of written accounts of ancient Japan.

The Kojiki is generally dated to 712 and is regarded as Japan’s oldest surviving book.

It contains myths, genealogies, songs, and narratives extending from the age of the gods to the reign of Empress Suiko.

The Nihon Shoki was completed in 720.

It is regarded as Japan’s oldest officially commissioned history.

Together, the two works are often called the Kiki.

But they do not tell every story in exactly the same way.

They differ in narrative order.

Genealogy.

Treatment of deities.

The prominence of Izumo traditions.

And the way alternative versions of myths are presented.

This means that ancient memory was already plural.

Different clans preserved different genealogies.

Different regions maintained different sacred traditions.

Different ritual groups explained the past in different ways.

According to the Kojiki’s preface, earlier imperial genealogies and clan traditions had accumulated errors and required correction.

The act of compilation therefore involved collecting traditions.

Selecting them.

Arranging them.

Resolving contradictions.

And shaping them into a narrative suitable for a state and royal court.

Historical compilation preserves the past.

But it also helps determine the form in which the past will be remembered.

Were All Local Traditions Erased?

The existence of alternative traditions does not prove that every local history was secretly suppressed.

In 713, the court ordered provinces to compile geographical and cultural reports later known as the Fudoki.

These records included geography, natural resources, place-name origins, customs, and the stories of local elders.

Only a limited number survive in substantial form.

Izumo.

Harima.

Hitachi.

Hizen.

Bungo.

Many other provincial records were lost or survive only in fragments.

This is where the subject reconnects with civilization reset.

A document does not survive merely because it once existed.

Fire.

War.

Humidity.

Insects.

Institutional change.

The disappearance of scribes.

The decision that an old text no longer deserved to be copied.

Any of these can break the chain of transmission.

The loss of local records is therefore not inherently mysterious.

But loss creates space for imagination.

What if the missing records described another political center?

What if they preserved a genealogy inconvenient to the court?

What if another kingdom existed before unification?

The boundary between lost local history and deliberately erased history is where alternative narratives begin to grow.

What Does “Forgery” Mean?

A historical forgery is not simply a book containing mistakes.

It may use the name of a person who did not write it.

It may claim to have been written centuries earlier.

It may present a modern or medieval composition as an ancient original.

It may invent a sacred chain of inheritance through a family, shrine, temple, or secret organization.

Authorship.

Date.

Origin.

Provenance.

Transmission.

When those elements are deliberately or demonstrably misrepresented, scholars may classify the work as a forgery, pseudepigraphal text, or falsely attributed document.

Yet the historical category is more complicated than ordinary fraud.

Writers in earlier periods sometimes attributed ideas to gods, ancestors, saints, or ancient rulers in order to give them authority.

A local tradition could be assembled into a genealogy.

A religious teaching could be presented as recovered ancient wisdom.

A writer might even believe that he was restoring a history that had been unjustly forgotten.

Different texts involve different degrees of invention, belief, reconstruction, and deception.

That is why the study of forged texts does not end with exposing them.

Who created the text?

When?

Which sources were used?

What did the writer seek to prove?

Who accepted it?

What need did it satisfy?

Those questions reveal the historical world that produced the document.

Ancient Japanese Apocrypha Is Not One Book

The category often called koshikoden does not refer to one ancient archive created by one author.

It is a modern umbrella term for works claiming to preserve Japanese history, mythology, writing, genealogy, or knowledge outside the accepted chronicles.

The Takenouchi Documents.

The Uetsufumi.

The Hotsuma Tsutae.

The Kuki Documents.

The Miyashita Documents.

The Mononobe Documents.

The Tsugaru Soto Sangunshi.

Katakamuna-related writings.

They do not share a single date, creator, or religious background.

They cannot be treated as one uniform collection.

Still, several patterns recur.

A source older than the Kojiki once existed.

Ancient Japan possessed an independent script.

The imperial genealogy extended much further into the past.

Japanese ancestors traveled throughout the world.

Advanced scientific or spiritual knowledge existed in remote antiquity.

The accepted chronicles removed the original history.

A particular family or spiritual lineage secretly preserved the truth.

These patterns are exceptionally powerful within urban legend.

They explain what was lost.

They also promise access to knowledge unavailable to ordinary readers.

Why Is “Erased History” So Persuasive?

Historical scholarship often leaves questions unanswered.

The evidence is insufficient.

Several interpretations remain possible.

The record has not survived.

Human beings do not always find those answers emotionally satisfying.

When a genealogy suddenly ends, we want to know why.

When a regional tradition differs from the central chronicle, we want to identify which one is true.

When an ancient monument appears difficult to build, we want a hidden technology.

When distant cultures share similar myths, we want a common origin.

The statement “the true history was deliberately erased” can connect every gap at once.

A missing document was destroyed.

A scholar’s rejection protects the official story.

The lack of evidence proves the success of the concealment.

Criticism shows that the text has approached a forbidden truth.

Once a narrative adopts this structure, contradiction can make it stronger.

That is why it requires careful reading.

How Scholars Test an Ancient Text

Scholars do not evaluate a document only by the power of its story.

They begin with the physical object and its provenance.

What is the oldest surviving manuscript?

Who owned it?

When was it first publicly reported?

Does an original exist?

Can its transmission be traced from one copy to another?

Language is examined.

Does the text use words that did not exist in the claimed period?

Does its grammar belong to a later form of Japanese?

Does it contain concepts produced by modern nationalism, modern science, or later religious movements?

The script must also be tested.

Is it independently attested in archaeological contexts?

Does it appear on wooden tablets, pottery, inscriptions, seals, or metal objects from the claimed period?

Could it have been adapted from a known later script?

The claims are then compared with external evidence.

Chinese and Korean records.

Archaeological chronology.

Settlement and burial patterns.

Metallurgy and agriculture.

Human remains and genetic studies.

Navigation technology.

If one document alone describes a global ancient empire while no contemporary material evidence or external record supports it, historians cannot responsibly accept the claim as established history.

Ancient Elements Do Not Make the Entire Text Ancient

A later document can contain genuinely old material.

Oral tradition.

Ritual formulas.

Songs.

Local genealogies.

Shrine legends.

Place-name memories.

A later writer may gather these elements and place them inside a newly constructed historical narrative.

In such a case, two statements can both be true.

The document itself is not an ancient original.

Some of its materials may preserve older traditions.

These questions must remain separate.

A text contains an old motif.

Therefore, the entire work is thousands of years old.

That conclusion does not follow.

But the opposite conclusion is also too simple.

The work is a later forgery.

Therefore, every tradition inside it is worthless.

The more useful approach is to identify layers.

Older oral material.

Later editing.

Religious interpretation.

Regional identity.

Modern national ideas.

Contemporary spiritual reinterpretation.

Different centuries can coexist inside one text.

Why Were Such Texts Created?

A history gives authority.

Our family descends from an ancient deity.

Our region was once the center of a kingdom.

Our shrine predates the state.

Our ancestors served an emperor or culture hero.

Claims of origin can justify land, ritual, social status, religious authority, and communal identity.

When a community is absent from central history, it may create or preserve another story.

The defeated.

The absorbed.

The renamed.

The politically marginalized.

The people who lacked the institutions required to preserve records.

For them, alternative history can become more than fantasy.

It answers the question of who they are.

Absence from official history can itself produce the need for another history.

Why Were They Believed?

Many alternative ancient histories gained attention during periods of rapid social transformation.

Contact with Western powers.

Modern state formation.

The reorganization of emperor-centered ideology.

New religious movements.

War and defeat.

Scientific modernization.

The weakening of traditional communities.

During such periods, people reconsider origins.

A narrative claiming that “the true Japan was far older” can become reassuring.

Japan was not merely a late receiver of continental civilization.

Japan was the original source.

The ancestors did not stand at the margins of world history.

They stood at its beginning.

Such narratives reverse feelings of inferiority and instability.

We are descendants of a forgotten great civilization.

The present crisis exists because we lost our original memory.

The secret document can restore the true identity of the nation or community.

Ancient apocrypha does not only explain the past.

It can become a promise that the present can be repaired.

The Attraction of Enormous Claims

Some texts extend their histories across thousands or tens of thousands of years.

Ancient emperors traveled the world.

Japanese ancestors taught civilization overseas.

Global monuments and religions originated in Japan.

Unknown scripts and sciences once existed.

The larger the story, the more dramatically ordinary history changes.

A schoolbook chronology becomes a world-scale secret.

One document appears capable of reversing everything the reader thought they knew.

That experience is powerful.

But the scale of a claim is not evidence for it.

Large claims require multiple independent lines of evidence.

When information capable of rewriting world history exists only in one manuscript, one family, or one claimed custodian, stronger verification is required, not weaker verification.

Rejection by Scholars Is Not Proof of Truth

Supporters of alternative texts sometimes argue that academic rejection proves suppression.

But scholarship is not supposed to depend only on institutional authority.

It depends on evidence that others can inspect.

Methods that can be repeated.

Materials that can be dated.

Claims that can be challenged.

Agreement across different forms of evidence.

Scholars can be wrong.

Accepted theories can change.

But theories change because new evidence becomes stronger than the previous explanation.

A newly excavated object.

Reliable dating.

A newly discovered manuscript with a traceable provenance.

Independent confirmation from archaeology or linguistics.

Not merely because a hidden-history narrative is emotionally attractive.

To question official history honestly, we must question alternative history with equal force.

A Forgery Can Still Be Historically Valuable

If a document is not an ancient primary source, its value does not necessarily disappear.

What did the people of its real period fear?

What had they lost?

What kind of Japan did they imagine?

Why were central chronicles insufficient?

Why did they need a lost genealogy or sacred script?

A forged document may reveal more about the age that created it than about the ancient age it claims to describe.

It can be studied as religious history.

Regional history.

Intellectual history.

Nationalism.

Modern spiritual culture.

Memory and identity.

This allows us to move beyond the simple choice between believing everything and dismissing everything.

Three Rules for This Series

This series will preserve three boundaries.

First:

We will separate what a document claims from what has been independently established.

A text saying that ancient rulers traveled the world is not proof that they did.

Second:

We will not hide academic criticism.

Problems involving date, language, script, provenance, material evidence, and historical consistency will be stated clearly.

Third:

We will not end with ridicule.

Why was the text created?

Why did readers accept it?

What psychological, regional, religious, or political need did it answer?

Those questions matter.

This is not a series designed to make readers believe.

It is not a series designed to mock belief.

It is a series about the structure that creates alternative history.

Conclusion: Forged Histories Grow Where the Past Feels Incomplete

Why do ancient texts called forgeries exist?

Because accepted history contains gaps.

Because local records were lost.

Because families and regions needed origins.

Because religious and political authority required ancient legitimacy.

Because rapidly changing societies searched for an authentic identity.

And because hidden history often feels more meaningful than unknown history.

There is currently insufficient evidence to accept the major ancient apocryphal texts as direct records from the remote periods they claim.

But the documents existed.

People read them.

People believed them.

People argued over them.

That history is real.

Inside these texts remains the desire for another past.

An erased kingdom.

A forgotten script.

Ancestors who traveled the world.

Knowledge preserved in secrecy.

Were these memories truly carried from ancient Japan?

Or were they hopes projected backward by later generations?

Beginning with the next entry, we will open the texts one by one.

First comes the most expansive of them.

The Takenouchi Documents.

An imperial genealogy extending into remote antiquity.

Ancient rulers said to have traveled and governed the world.

And a bloodline said to have been removed from accepted history.

Next—

Ancient Japanese Apocrypha Files No.02.

The Takenouchi Documents, Part One:

The Super-Ancient Imperial History and the “Erased Genealogy.”

Why are stories of suppressed royal lines repeated?

Next time, I will return to trace another fragment of hidden truth with you.

This series does not present religious claims or alternative documents as verified history. It separates textual claims, academic evaluation, tradition, and later interpretation.