[5m Japan-Roots] Smallpox Epidemic: Nara’s Fall & the Fujiwara Crisis #015

c.250CE- | Kofun & Nara
c.250CE- | Kofun & Nara
🌿 30-Second Summary 🌿

The Nara period’s glittering culture masks a brutal era defined by a lethal smallpox pandemic and relentless power struggles. The 735 epidemic annihilated approximately 30% of the population, completely devastating the Fujiwara leadership. Consequently, the desperate court embraced monumental Buddhist projects for spiritual protection. Ultimately, the scandalous rise of a monk and a massive Fujiwara counter-coup permanently shifted the imperial bloodline from the Tenmu to the Tenji lineage.

The Pandemic that Changed Politics
Tenento :Smallpox, a highly contagious and lethal disease that severely ravaged ancient Japan.
Gyoki :The charismatic monk who mobilized the masses to assist in constructing the Great Buddha.
Fujiwara no Hirotsugu :The rebellious aristocrat who launched a doomed uprising in Kyushu to restore his clan’s power.

The devastating 735 Tenento pandemic radically altered Japanese political history. This relentless disease annihilated approximately one-third of the national population. Surprisingly, the virus also eradicated all four top-ranking brothers of the dominant Fujiwara clan, instantly creating a massive political vacuum at the center of the government.


Consequently, Tachibana no Moroe (The imperial minister) attempted to permanently marginalize the surviving Fujiwara members. This aggressive political exclusion provoked Fujiwara no Hirotsugu to launch a desperate rebellion, which the government swiftly crushed. Therefore, the terrified administration enlisted Gyoki to construct the colossal Great Buddha, utilizing monumental religious infrastructure to spiritually defend the crumbling nation.

🌿 Key Takeaways 🌿

Pandemics destroy political equilibrium. The sudden annihilation of the Fujiwara leadership triggered regional rebellions and forced the desperate state to rely heavily on massive Buddhist projects for national salvation.

Illustration of the Emperor relocating the capital

── Let’s explore why the Emperor abandoned his capital city…

スポンサーリンク
The Wandering Emperor
Shomu Tenno :The devout emperor who desperately relied on Buddhism to pacify the disaster-stricken nation.
Komyo Kogo :The powerful empress from the Fujiwara clan who dominated politics after her husband’s abdication.
Fujiwara no Nakamaro :The rising autocrat who ruthlessly eliminated rivals with the backing of the empress.

Shomu Tenno bore the overwhelming psychological burden of plagues, rebellions, and factional warfare. Desperately seeking to sever this chain of disasters, he repeatedly relocated the capital city over several chaotic years. However, severe financial exhaustion ultimately forced the court to abandon these wandering capitals and return to Heijo-kyo.


Ultimately, the exhausted emperor abdicated the throne to his daughter. Subsequently, Komyo Kogo and her favored minister, Fujiwara no Nakamaro, aggressively seized control of the government. This ruthless duo successfully purged the rival Tachibana clan, officially returning the Fujiwara to absolute political dominance.

🌿 Key Takeaways 🌿

Geographic relocation cannot solve systemic crises. While the emperor fruitlessly moved the capital to escape disaster, the Fujiwara clan systematically utilized his abdication to reclaim absolute power.

Illustration of the Empress and the influential monk

── Let’s examine the unprecedented scandal that broke the imperial line…

スポンサーリンク
The Empress, the Monk, and the Lineage Shift
Koken Tenno :The reigning empress who later re-ascended the throne as Shotoku Tenno.
Dokyo :The ambitious monk who gained unprecedented political power through the empress’s favor.
Tenji Tenno :The ancestor of the restored imperial lineage, permanently replacing the Tenmu bloodline.

The retired Koken Tenno developed a highly controversial relationship with Dokyo after he supposedly cured her severe illness through prayer. Terrified by the monk’s rapid political ascent, Nakamaro launched a preemptive rebellion but suffered a crushing defeat. Consequently, the victorious empress re-ascended as Shotoku Tenno and elevated Dokyo to unprecedented heights.


However, the true historical turning point occurred immediately after the empress’s death. Capitalizing on the sudden succession crisis, Fujiwara no Momokawa (The shadow broker) orchestrated a brilliant political coup. He forcibly installed a descendant of Tenji Tenno, permanently extinguishing the Tenmu imperial line and cementing a new era entirely controlled by the Fujiwara aristocracy.

🌿 Key Takeaways 🌿

Personal scandals trigger permanent political shifts. The controversial alliance between the empress and the monk inadvertently allowed the Fujiwara clan to orchestrate a massive coup, permanently changing the imperial bloodline.

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    スポンサーリンク
    Conclusion: The End of an Era

    The devastating Tenento pandemic completely destabilized the Nara period, setting off a chain reaction of political purges and succession crises. The main points of this article are:

    ✅ The Tenento pandemic temporarily obliterated the Fujiwara clan’s leadership.
    ✅ Shomu Tenno desperately utilized massive Buddhist projects to save the state.
    ✅ A post-scandal coup permanently shifted the throne to the Tenji lineage.

    We hope this exploration of ancient pandemics and political intrigue illustrates how unforeseen biological disasters can fundamentally reshape a nation’s history.

    ✅ FAQ ✅

    Q1. How severe was the Tenento epidemic?

    It was catastrophically lethal, wiping out approximately 30% of Japan’s population, including all four leading brothers of the powerful Fujiwara clan, which completely paralyzed the central government.

    Q2. Did Dokyo actually try to become the Emperor?

    Historical records indicate there was a serious court debate regarding his ascension, but Shotoku Tenno ultimately rejected it. The exact truth remains deeply buried within the era’s intense political propaganda.

    Q3. How did the Fujiwara clan regain their power?

    Following the death of Shotoku Tenno, Fujiwara politicians capitalized on the lack of a clear heir to install a compliant emperor from the Tenji lineage, effectively eliminating their rivals and securing total court control.

    [Main References]
    ・Edited by Makoto Sato et al., "詳説日本史(日本史探究)", Yamakawa Shuppansha, 2023
    ・Edited by the National History Textbook Compilation Committee, "市販版 国史教科書", PHP Institute, 2024
    ・Edited by Haruo Sasayama et al., "詳説 日本史史料集", Yamakawa Shuppansha
    Source: Wikimedia Commons
    *This article is based on the reliable books and historical materials listed above, but includes original expressions prioritizing clarity.
    Greats Are Human, Too.

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