learn/[id]

時代
12 分で読める
石
ERA
Ishiyama Honganji and the Ikko-Ikki: Rise and Fall of Japan's Most Powerful Religious Force
The complete story of how the Jodo Shinshu Honganji led the Ikko-Ikki peasant-monk forces in a decade-long war against Oda Nobunaga at Ishiyama Honganji (now Osaka Castle's site). From the 100-year peasant republic in Kaga to the massacre of 20,000 at Ise Nagashima, to the East-West split of the Honganji — Japan's most dramatic story of popular resistance.
武
Author
Taketoki
| Samurai History
Contents
MOKUJI
一
Jodo Shinshu's Founding and Rennyo's Revolution
›
二
The Ikko-Ikki and the Kaga Peasant Republic
›
三
The Battle of Ishiyama — Ten Years of War Between Nobunaga and Kennyo
›
四
Withdrawal, Osaka Castle, and the East-West Split
›
五
Frequently Asked Questions
›
During Japan’s Warring States period, the force that fought most fiercely against Oda Nobunaga was not a rival warlord but the Jodo Shinshu (True Pure Land Buddhism) religious movement led by the Honganji. The decade-long Battle of Ishiyama, the 100-year peasant republic in Kaga, and the massacre of 20,000 people at Ise Nagashima — Japan’s most dramatic story of popular resistance against a unifier is also its most important tale of faith becoming military force. Visiting Nishi Honganji and the Ishiyama Honganji site brings this extraordinary history to life.
Jodo Shinshu’s Founding and Rennyo’s Revolution
200 Years of Decline After Shinran
Jodo Shinshu (True Pure Land Buddhism) was founded by Shinran (1173–1262) in the Kamakura period. The teaching that “reciting Namu Amida Butsu saves even evil people and women” spoke to suffering commoners. After Shinran’s death, however, the Honganji declined, struggling to keep a small flame of teaching alive in a corner of Kyoto’s Higashiyama.
The Eighth Generation Rennyo’s Ofumi Revolution
The transformation came with the eighth head, Rennyo (1415–1499). His ofumi — letters written in simple, kana-mixed Japanese explaining the faith — were a revolutionary communication tool in an era of low literacy. By organizing ko (groups of believers) throughout the regions, Rennyo transformed the Honganji into the most powerful religious force in the Warring States period.
The Ikko-Ikki and the Kaga Peasant Republic
Yoshizaki Gobo — A Religious City of 100,000 Believers
In 1471, Rennyo built the Yoshizaki Gobo in Echizen Province (present-day Awara City, Fukui). 100,000 believers from the Hokuriku and Kinki regions gathered, creating an enormous religious city. The Yoshizaki Gobo site in Fukui preserves this memory with branch temples of both the Eastern and Western Honganji.
The Kaga Peasant Republic — Japan’s Unique Popular Self-Governance
In 1488, the Kaga domain’s Ikko-Ikki believers overthrew the military governor Togashi Masachika and maintained “a country governed by peasants” for approximately 100 years. This was an extraordinarily rare experiment in popular self-governance in Japanese history. The republic survived until Shibata Katsuie’s forces pacified it in 1580.
Scale of the Ikko-Ikki Uprisings
Region
Key Uprising
Outcome
Kaga
Governor overthrow; century-long self-rule
Suppressed by Shibata Katsuie, 1580
Ise Nagashima
Major fortified stronghold
1574: 20,000 massacred by Nobunaga
Echizen
Large-scale uprising
1575: ~30,000 killed by Nobunaga
Mikawa
1563 Mikawa Ikko-Ikki
Tokugawa Ieyasu’s greatest crisis
Tokugawa Ieyasu’s 1563 Mikawa Ikko-Ikki turned half of his own retainers against him — his worst crisis in a long career of crises.
The Battle of Ishiyama — Ten Years of War Between Nobunaga and Kennyo
Kennyo’s Declaration of War
In 1570, the eleventh head, Kennyo (1543–1592), sent a call-to-arms to believers across Japan: “Strike down Nobunaga.” This began the Battle of Ishiyama. Ishiyama Honganji (on the site of present-day Osaka Castle) had fortified itself with moats and earthworks into a functional military fortress surrounded by a temple town.
The Saika Musketeers, the Mori Navy, and Naval Battles
Nobunaga besieged Ishiyama Honganji but could not take it — the Saika musketeer corps (Wakayama’s gun specialists) provided covering fire while the Mori clan’s navy kept supply routes open by sea. At the 1576 Battle of Kizugawaguchi, the Mori navy destroyed Nobunaga’s fleet. But in 1578, Kuki Yoshitaka’s iron-clad warships defeated the Mori navy in the second Battle of Kizugawaguchi, gradually cutting off Ishiyama’s supplies.
Nobunaga’s Massacres
In 1574, after surrounding the Ise Nagashima Ikko-Ikki fortifications, Nobunaga refused to accept surrender and ordered the slaughter of 20,000 men and women by fire and sword. In 1575, the suppression of the Echizen uprising killed approximately 30,000. The believers’ faith-fueled resistance drowned in blood before modern weapons and ruthless will.
Withdrawal, Osaka Castle, and the East-West Split
1580: Imperial Mediation and Departure
In 1580, an imperial-mediated peace was concluded and Kennyo withdrew from Ishiyama. Immediately afterward, Ishiyama Honganji burned to the ground under mysterious circumstances. Toyotomi Hideyoshi later built Osaka Castle on the site. The Yamashina Honganji site is also available for visiting today.
1602: Ieyasu’s Political Masterstroke — East-West Split
In 1591, Hideyoshi gave Kennyo land at Rokujō Horikawa in Kyoto, where the Honganji was rebuilt — today’s Nishi Honganji. After Kennyo’s death, a succession dispute arose, and in 1602 Tokugawa Ieyasu gave the rival claimant Kyonyo land at Shichijo Karasuma, establishing Higashi Honganji (Shinshu Otani-ha). Splitting the religious organization permanently defused the military threat it had posed in the Warring States period.
Today, Nishi Honganji and Higashi Honganji stand within walking distance of Kyoto Station, each with approximately 10,000 branch temples and millions of adherents.
Frequently Asked Questions
Where is the site of Ishiyama Honganji today?
Present-day Osaka Castle (Chuo Ward, Osaka) stands on the site. No Honganji-era structures remain within the castle grounds, but the Osaka Castle History Museum has exhibits on the Battle of Ishiyama. The site is commemorated as the Ishiyama Honganji site.
How did Ikko-Ikki differ from ordinary peasant uprisings?
Ordinary peasant uprisings resisted lords for economic reasons. The Ikko-Ikki were distinguished by Jodo Shinshu faith as an organizational foundation — the belief that “dying brings Paradise” overcame the fear of death and created a military cohesion that was nearly impossible to break through normal force.
Why did Kennyo accept the peace agreement?
After ten years of siege with supply routes increasingly cut off, and facing the emperor’s personal mediation, Kennyo chose survival of the institution over continued resistance. Some hardliners wanted to fight on, but Kennyo prioritized the Honganji’s existence as a religious organization.
Which is the “original” Honganji — East or West?
In terms of founding lineage, Nishi Honganji (Jodo Shinshu Honganji-ha) is considered the legitimate continuation of the original Honganji. Higashi Honganji (Shinshu Otani-ha) was politically created by Ieyasu. Both have developed independently and are now among Japan’s largest Buddhist denominations.
What historical sites can visitors explore today?
Yoshizaki Gobo (Awara City, Fukui) is where the Ikko-Ikki movement began. Nishi Honganji (Kyoto) preserves architecture and treasures from Kennyo’s era. Nagashima Ganjoji (Kuwana City, Mie) marks the site of the Ise Nagashima massacres.
Last updated: April 25, 2026
── 了 ──
武
Author
Taketoki（たけとき）
Samurai History
Toku editorial team — samurai history. Insists on primary sources and castle-layout diagrams, walking battlefields from Yoritomo's Izu exile sites to the late-Edo battlegrounds.
›
This article was
♡ Helpful
⤴
詣
Visit Related Places
History truly comes alive when you visit in person. Choose your next destination from the related sites and pilgrimage courses below.
I
1. Ishiyama Honganji Ruins
The impregnable Ikko-shu fortress that defied Nobunaga for a decade — where Hideyoshi later built Osaka Castle
›
2. Nishi Honganji
World Heritage head temple of Jodo Shinshu — Shinran's legacy preserved in the grand Momoyama complex
›
Y
3. Yamashina Honganji Ruins
Founded 1478 by Rennyo as the nerve center of nationwide Ikko-shu Buddhism — burned to the ground in 1532 and now a National Historic Site
›
N
4. Nagashima Ganjoji Ruins
Ikko-ikki stronghold founded by Rennyo's son — site of Nobunaga's Nagashima massacre of over 20,000 in 1574
›
5. Saginomori Betsuin
Temple where Kennyo based the Honganji after Ishiyama — the Ikko-shu stronghold before the move to Kyoto
›
Pilgrimage Course
Japan Top 100: Kyoto/Osaka/Hyogo
Visit 28 sites
›
Pilgrimage Course
100 Temples ⑤ Kinki/Kyoto
Visit 29 sites
›
Related Articles
T
共通のスポット
The Ikkō-ikki: How Buddhist Faith Forged a Century of Peasant Rule
The Ikkō-ikki were not a simple peasant revolt. Shinran's teaching of universal salvation through Am
›
S
共通のスポット
Shinran: Echigo Exile to Kanto Mission and Birth of Jodo Shinshu
Shinran (1173-1263), Honen's most devoted disciple, was exiled to Echigo (modern Niigata) in the 120
›
E
共通のスポット
Echigo: Birthplace of Jodo Shinshu Through Shinran's Five-Year Exile
Echigo Province (modern Niigata) was the exile site of [Shinran](/character/shinran) (1207-1212) dur
›
I C H I G O I C H I E
📱
Explore pilgrimage with the app
Download on the App Store
✕