The Reality of Cloistered Rule: A Governance Model Equipped with Commands, Finance, and Military Power
Cloistered rule (insei) is a system in which an emperor, after abdicating the throne, retains actual political power as a retired emperor (joko) or cloistered emperor (ho-o). It is often described as an intermediate stage between the regency government and the samurai government, but in reality, it was a robust governance model equipped with a command system, a financial base, and military apparatus. This article organizes its origins, mechanisms, economic and military levers, and cultural legacy and decline in terms that even beginners can understand.
1. Foundations of Cloistered Rule
1-1. What is "Cloistered Rule"?
Cloistered rule (insei) is a system where an abdicated emperor—a retired emperor (or a cloistered emperor if they have taken Buddhist vows)—leads politics through a route separate from the reigning emperor. It began in 1086 when Emperor Shirakawa abdicated to become a retired emperor, moving politics through his own commands while avoiding interference from the regency family. While it appears to be a "dual government" because daily decision-making takes place on the retired emperor's side while the emperor's authority is maintained, the practical work was consolidated in the retired emperor's office (in-no-cho), which coordinated and harmonized with the imperial court.
This method demonstrated flexibility in an era when power dynamics among nobles were difficult to stabilize. By having a counterweight to the regency family, the retired emperor was able to regain the initiative for the imperial family. Furthermore, by quickly rotating generations through abdication and having the retired emperor act as a guardian for a child emperor, long-term policy continuity was created.
1-2. Who led it and when did it spread?
The three retired emperors—Shirakawa, Toba, and Go-Shirakawa—are the representatives who shaped the period of cloistered rule. Shirakawa pioneered it, Toba established cloistered rule as a system, and Go-Shirakawa exerted great influence through maneuvering with samurai forces and temples/shrines. The peak was generally from the late 11th century to the late 12th century, during which the Hogen and Heiji Rebellions occurred, samurai rose to prominence, and the skill of cloistered rule was tested through alliances and conflicts with the Taira and Minamoto clans.
During this time, abdication and accession were repeated in short cycles, and the retired emperor steered politics with experience and networks. What is important is that it was accompanied not only by individual charisma but also by institutional backing in the form of commands, bureaucracy, finance, and military power. From here on, we will look at those mechanisms in detail.
2. Mechanisms: Commands, Organizations, and Connections
2-1. The Cloistered Command System—Inzen and In-no-cho Kudashibumi
An inzen is a command that presents the retired emperor's will as an official document, and its strength lay in the ability to quickly set policies in motion without going through the procedures of the Grand Council of State (Dajokan). In practice, it was used in tandem with the "in-no-cho kudashibumi" issued by the retired emperor's office, which reached provincial governors, local officials, and samurai directly. This allowed for the adjudication of land disputes and the distribution of personnel appointments and rewards through a shorter path than the imperial court's normal routes (senji and kanpu).
The reliability of the commands was guaranteed by the standardization of wording and the management of issuance records. Because the authority would diminish if inzen were issued excessively, the targets and expiration dates were clarified, and at the same time, a consensus was fostered among temples, shrines, and nobles that "the retired emperor's judgment is final." The combination of speed and legitimacy was the heart of cloistered rule.
2-2. The Retired Emperor's Office and Close Retainers—The People Who Made It Move
The in-no-cho was the retired emperor's administrative agency, where officials such as the betto (chief), hangan (judges), and shuten (clerks) shared duties in writing, adjudication, and practical tasks. Surrounding them were the "in-kinshin" (close retainers), the retired emperor's inner circle network. These retainers included not only nobles but also mid-to-low-ranking officials skilled in practical affairs, as well as liaisons with temples and samurai, and their cooperation served as the lubricant for policy execution.
Meetings at the in-no-cho quickly organized cases and, if necessary, coordinated them with the imperial court's council of high-ranking nobles. The point is that it functioned as a translation device connecting the retired emperor's personal will with the administrative apparatus. The breadth of these human networks created the "on-the-ground political power" to bundle complex interests.
3. Economic and Military Levers
3-1. Cloistered Estates and Finance
Cloistered estates (inryo shoen) were groups of manors that the retired emperor could control and monetize, with annual tributes and labor services supporting the finances of the cloistered rule. When temples, shrines, and noble estates were converted into cloistered estates through donation, local manor officials and managers handled the collection of tributes, utilizing river and sea routes for transport. Income was redistributed for rewards, repairs, religious projects, and security costs, becoming the foundation for political support.
At the same time, because tax overlaps and boundary disputes increased, the retired emperor's office reaffirmed the right of police power (kendanken) through inzen, adjusting the authority of provincial governors and manor officials. The ingenuity of cloistered rule lay in the idea of controlling the "flow" rather than just the "money," combining logistics with legal authority.
3-2. The Hokumen Bushi and Military Apparatus
The Hokumen no Bushi (Northern Guards) were a group of elite warriors responsible for the personal protection of the Retired Emperor and the execution of administrative duties. They were named for the guard station located on the north side of the palace and performed various roles, including security, arrests, and command support for military operations. Influential figures from the Taira and Minamoto clans built their reputations here, eventually emerging as key players in later power struggles. The Retired Emperor incorporated the capabilities of these warriors into the administration, securing their loyalty through rewards and official positions.
Because the privatization of military force could lead to instability, the frequency and transparency of personnel appointments and rewards were crucial. The Cloistered Government promoted the 'visualization of merit' and the 'expediting of rewards' to suppress the accumulation of dissatisfaction among the warriors. Whether this system functioned effectively determined the stability of the Cloistered Rule.
4. The Legacy of Cloistered Rule
4-1. Culture and Religion—Rituals Supporting Politics
Religious and ritual activities led by the Retired Emperor, such as the construction of the Hojuji-dono and pilgrimages to Kumano, served as nodes connecting faith and politics. Large-scale memorial services and imperial progresses were not only displays of prestige but also functioned as 'social hubs' that mobilized aristocrats, temples, shrines, and warriors across boundaries. The patronage of performing arts, waka poetry, and Buddhist art also flourished, leading to the formation of cultural salons around the Cloistered Government.
Rituals were not mere waste; they were 'public investments' for creating order and consensus. Participants were assigned roles, which strengthened the sense of unity within the community. As a result, the trust necessary for political negotiation was fostered, making it easier to proceed with difficult adjustments.
4-2. Demise and Succession—The Cloistered Government within the Warrior Regime
Even after the establishment of the Kamakura Shogunate, the Retired Emperor maintained a certain degree of symbolic and mediatory authority, but the initiative in military and financial matters gradually shifted to the warrior class. Following the Jokyu War, the Retired Emperor's ability to mobilize military forces was restricted, and the effectiveness of the Inzen (cloistered imperial decrees) diminished. However, the methods of using dual authority to adjust interests, the strategy of accelerating generational change through abdication, and the concept of binding society through ritual continued to remain in the undercurrents of Japanese politics thereafter.
In other words, the Cloistered Rule did not disappear; it persisted while changing its role under the warrior regime. Its genetic code as a technique of governance can also be read in the relationship between the Imperial Court and the Shogunate in the early modern period and in the symbolic functions of the modern era.
Summary
Cloistered Rule was an attempt to reorganize royal power, in which the Retired Emperor, after abdicating, led politics by taking control of commands, the bureaucracy, finance, and military force. The 'governance wiring diagram' that connected fast command routes (Inzen), practical agencies (Incho), revenue bases (In-ryo estates), and the imperial guard (Hokumen no Bushi) bridged the era as power shifted from the regents to the warrior class.
In modern terms, it was a governance design that separated authority from practical affairs and advanced decision-making through multiple routes. There is also a lesson in how it used ritual as a public investment to accelerate consensus building. By grasping the details of history, we can find hints on how to redesign institutions.