Meiō Political Crisis

The Twilight of the Muromachi Shogunate—The Kanrei's Overreach and the Collapse of Shogunal Authority

More than a decade after the Ōnin War (1467–1477) had ended, Kyoto's flames had subsided, but the authority of the shogunate had declined markedly. Shogun Ashikaga Yoshimasa devoted himself to the promotion of Higashiyama culture and paid little attention to governance, while factional strife over the succession continued to shake the very foundations of the Muromachi shogunate.

It was in the midst of such turmoil that Hosokawa Masamoto rose to prominence. Masamoto inherited his father Katsumoto's legacy and took control of the Hosokawa clan, which wielded tremendous power in the Kinai region. Yet he was an unconventional statesman—unmarried throughout his life, he kept women at a distance and devoted himself entirely to the ascetic practices of Shugendo mountain religion. Though he wielded such authority that he was called the "half-shogun" (hanshōgun), his political conduct was extraordinarily high-handed.

Ashikaga Yoshiki, who succeeded Yoshimasa as shogun, refused to remain merely Masamoto's puppet and sought his own political authority. Yoshiki aligned himself with Hatakeyama Masanaga, who held power in Etchū Province, and attempted to counter Masamoto. This confrontation became the direct trigger for the Meiō Political Crisis of 1493.

The Trigger of the Coup—The Kawachi Campaign and the Vacuum in Kyoto

In the third month of Meiō 2 (1493), Yoshiki personally led an army and set out for Kawachi Province to attack Hatakeyama Yoshitoyo, the enemy of Hatakeyama Masanaga. Masamoto waited quietly for this opportunity when the shogun was absent from Kyoto.

While Yoshiki was campaigning, Masamoto executed a swift coup. He first suppressed Yoshiki's faction within the shogunate and placed Yoshiki under de facto restraint. Furthermore, he destroyed Hatakeyama Masanaga, Yoshiki's principal ally. With Yoshiki isolated in Etchū and having no way to return, the shogun was formally deposed. Yoshiki was brought to Kyoto and placed under confinement, but later escaped to become a wanderer. Subsequently, Yoshiki would roam about as the "wandering kubō" (nagare-kubō), occasionally raised by anti-Hosokawa factions, and twice attempted to reclaim the shogunal title—but that is another tale.

The Installation of a Puppet Shogun—The Advent of Yoshizumi

Masamoto's next move was the installation of a new shogun. He selected Ashikaga Yoshizumi, a member of a collateral branch of the Ashikaga family. Yoshizumi was chosen not for political talent but for his docility to Masamoto's will.

In the seventh month of Meiō 2, Yoshizumi was formally installed as shogun. Yet true power remained entirely in Masamoto's hands. The court nobles and regional daimyo of Kyoto formally recognized Yoshizumi as shogun, but all understood who the actual ruler was. The precedent that "the kanrei possesses the authority to depose and install shoguns" had been established, inflicting an irreversible wound upon the authority of the Muromachi shogunate.

This coup was no mere power struggle. The fact that the shogun had become a figure replaceable at the kanrei's discretion shook the very foundations of the realm's order. Regional daimyo across Japan drew an unmistakable conclusion from this coup: "There is no obligation to obey the shogun's commands."

The Meiō Political Crisis as the "Starting Point" of the Sengoku Period

Historians debate the precise moment when the Sengoku period began. Some point to the Ōnin War (1467) as the inception; others identify the Meiō Political Crisis (1493) as the symbol of gekokujō (the low overthrowing the high); still others regard the tumults of the Jōroku and Tenbun eras (1531 onwards) as the true intensification of the Sengoku period. Scholars vary in their interpretations.

Yet the significance of the Meiō coup as the "symbol of gekokujō" is profound. The fact that the kanrei deposed the shogun embodied the Sengoku-era value system wherein "power is justice." Because of this precedent, the subsequent chain of gekokujō—Saita Dōsan's seizure of Mino Province, Matsunaga Hisahide's rebellion against the Miyoshi clan, and ultimately Oda Nobunaga's expulsion of the shogun—became justified.

Masamoto himself became a victim of the very precedent he had established. In 1507, he was assassinated by retainers of his adopted son Sumiyuki. Ironically, he too fell to gekokujō. Yet the repercussions of the coup he executed in 1493 would bind Japan to an age of warfare for the next hundred years.

The Fragmentation of the Hosokawa and the "Dual Hosokawa Wars"

Following the Meiō coup, succession struggles intensified within the Hosokawa clan itself. Masamoto had no biological heirs, and three adopted sons—Sumiyuki, Sumimoto, and Takakuni—each claimed the right to succeed to the Hosokawa headship. After Masamoto's death, internal strife known as the "Dual Hosokawa Wars" (Ryō-Hosokawa no Ran) divided the clan, and politics in the Kinai region fell into deeper confusion.

Taking advantage of this chaos, the Miyoshi clan rose to prominence, and eventually Miyoshi Chōkei came to wield power that surpassed even the kanrei families. The rise of the Miyoshi clan was itself a manifestation of the "chain of authority collapse" triggered by the Meiō coup.

The seed Masamoto had sown—"the shogun can be deposed"—would consume the Hosokawa clan itself and eventually blossom as a poisonous flower that would destroy the Ashikaga shogunal house. If the Ōnin War was the "opening of an age of warfare," the Meiō Political Crisis marked the "completion of the collapse of order."

The Impact on Sword Culture—The Blades of Chaos and Political Violence

The Meiō Political Crisis exerted an indirect influence on the history of the Japanese sword. The erosion of shogunal authority and the fragmentation of regional daimyo power became a turning point that transformed demand for blades from quality to quantity. While artistically refined pieces continued to be forged as offerings to the shogunal house, the production of practical bulk-produced swords (kazuuchigata-na) surged rapidly as preparation for wars breaking out across the realm.

In particular, the collective of swordmakers in Seki, Mino Province (present-day Seki City, Gifu Prefecture), established mass-production systems in response to the era's expanded demand. While master smiths such as Kanemoto, known as "Seki no Magoro," achieved renown, Mino swords as bulk-produce goods became widely distributed—from ashigaru foot soldiers to regional daimyo throughout Japan. The "age of chaos" triggered by the Meiō Political Crisis was the turning point that remade the geography of the Japanese sword industry.