The Books That Made the Myths: Kojiki and Nihon Shoki

Nearly every story in the first half of this course reaches us through an edited source. Izanagi’s escape, Amaterasu’s cave, Susanoo and Orochi, the descent of Ninigi, and the first emperors were not copied from a single timeless “Japanese mythology.” They were selected, arranged, and written for an eighth-century court.

That does not make the stories fake. It makes them texts with makers, audiences, and purposes. The skill for this lesson is learning to keep two thoughts together:

a myth can be religiously and culturally important;
its written form can also make a political argument.

Two books, two reading experiences

The Kojiki, presented in 712, is the oldest surviving Japanese narrative. Its three books move from divine origins through genealogies, reigns, tales, and songs. Gustav Heldt’s modern translation describes it as an account of the islands’ and dynasty’s mythical beginnings rather than as a modern history book ¹. The preface names Ō no Yasumaro as the person who wrote down material associated with the reciter Hieda no Are for Empress Genmei.

The Nihon Shoki, completed in 720, uses the structure of continental annals. It is organized chronologically and was written in a learned classical-Chinese register suited to an official state history. Kokugakuin’s reference guide notes both that annalistic model and the text’s ritual and sacred afterlife ².

The easiest memory aid is useful as long as you treat it as a prompt, not a law:

Kojiki = kin: lineage, relationships, songs, and a compact narrative spine.
Nihon Shoki = nation: annals, diplomatic posture, chronology, and named alternatives.

The Nihon Shoki often preserves variants with a formula equivalent to “one writing says.” Those alternatives matter. If one chronicle assigns an act to Tsukuyomi and another version assigns it to Susanoo, the disagreement is evidence: the tradition was plural before an editor put versions on the same page.

A manuscript page of vertically written Chinese characters with smaller reading marks and annotations — A page from the fourteenth-century Shinpukuji manuscript of the Kojiki. The surviving object is medieval even though the work was presented in 712—a useful reminder that composition date and manuscript date are different facts. Credit: Ken'yu; digitized facsimile via Wikimedia Commons · Public domain · Source

What the court was building

The new capital at Heijō-kyō was part of a larger state project. The Nara National Research Institute describes a planned capital established in 710 with an imperial palace at its northern center ³. Law codes, offices, ranks, taxation, diplomacy, ritual, and written history all helped a central court describe—and exercise—authority.

The chronicles contribute to that project in narrative form. Their mythic opening does not stop before imperial genealogy begins. Instead, divine descent flows into human reigns. That continuity supports a claim: the ruling house belongs inside the sacred order presented at the start of the books. Kokugakuin’s history of Shinto literature therefore calls the Kojiki, Nihon Shoki, and provincial fudoki political myths compiled within the Yamato court’s world ⁴. “Political” here does not mean “mere propaganda.” It means that the stories distribute status, territory, ancestry, and legitimacy.

This is why Izumo receives so much attention. The central narrative must explain how Ōkuninushi’s land comes under the rule of Amaterasu’s descendants. A local deity can remain powerful and beloved while the plot places that power inside a Yamato-centered settlement.

The third shelf: fudoki

In 713, provinces were ordered to compile fudoki: records of land, products, place-names, customs, and local stories. Kokugakuin’s reference entry ties the order to a dated Shoku Nihongi entry and explains that five gazetteers survive, with only the Izumo Fudoki complete; the other four are incomplete, abbreviated, or disordered ⁵. It is valuable precisely because it changes the camera angle. A central chronicle asks how the realm fits the dynasty. A provincial gazetteer asks how a landscape got its name, which deity occupies it, and what a locality produces.

When the sources disagree, do not rush to choose a winner. Write the versions in parallel:

Question	Central chronicle	Provincial or local account
Who acts?	Which deity or ruler is foregrounded?	Which local deity or clan remains visible?
Where?	Is the place part of a realm-wide route?	Does the story explain a named hill, river, or village?
What changes?	Does authority pass toward Yamato?	Does the landscape retain a local relationship?

The difference is often the lesson.

Side-by-side comparison of the Kojiki and Nihon Shoki followed by four source-reading questions — The two chronicles overlap, but their form and rhetorical posture differ. Read the passage, then ask who compiled it, for whom, which variants it preserves, and what claim the story supports. Credit: StudyCorner original diagram · Original educational diagram · Source

A four-pass reading method

Use M-A-P-S whenever a myth is presented as though it were a transparent report:

M — Maker: Who compiled, copied, translated, or sponsored this version?
A — Audience: Court insiders, foreign readers, pilgrims, shrine visitors, or modern tourists?
P — Pattern: Genealogy, annal, place-name tale, ritual explanation, or heroic episode?
S — Stakes: Which relationship, territory, office, or ritual does the story authorize?

Then add a fifth line: survival. The work may be eighth-century while the manuscript, edition, and translation you are actually reading are much later. A facsimile page is evidence for how a text was transmitted, not a photograph of the original compilation scene.

Worked example: the heavenly cave

Apply the method to Amaterasu’s cave:

Maker: compare the Kojiki telling with the Nihon Shoki main account and variants.
Audience: notice how a court ritual audience would recognize mirrors, jewels, recitation, and performance.
Pattern: the crisis is solved by coordinated ritual action, not one warrior’s strength.
Stakes: the episode helps explain the prestige of ritual lineages and objects used by the court.
Survival: a modern performance at Takachiho is a living interpretation with its own local history, not a recording carried unchanged from 712.

That reading does not drain the story of wonder. It reveals why every prop and performer matters.

Field exercise at Nara

At the Heijō Palace Site, make one page with three columns:

Text: one claim the chronicles make about order or descent.
Institution: one palace, gate, office, road, or reconstructed spatial feature that shows how the court organized people.
Gap: one thing the archaeology cannot prove about the story.

The gap is not failure. It is disciplined boundary-setting.

Check your understanding

Why is “the Kojiki is myth while the Nihon Shoki is history” too simple?
What does a preserved variant let you see that a harmonized retelling hides?
How can a story be politically useful without being culturally meaningless?
Pick one earlier lesson and label its source as chronicle, local tradition, later literature, visual art, or current practice.

If you can answer those without flattening the sources into either literal fact or disposable fiction, you are ready for the legendary rulers in the next lesson.