The Honnō-ji Incident

In the early hours of June 2, Tenshō 10 (1582), the course of Japanese history shifted dramatically. Oda Nobunaga, the supreme ruler lodging at Honnō-ji in Kyoto, was surrounded by 13,000 soldiers under his senior retainer Akechi Mitsuhide. With no escape, he took his own life. This was the Honnō-ji Incident.

Oda Nobunaga as a Person and His Passion for Swords

Oda Nobunaga is renowned as a warlord possessed of an exceptional passion for swords. As the supreme ruler, he collected celebrated blades from across the realm, and their number exceeded that of any other Sengoku daimyo. One of Nobunaga's most treasured swords was the Heshikiri Hasebe. This blade, famous for having been bestowed by Nobunaga to Kuroda Kōko (Kanbe), was not only wielded by Nobunaga as a favored weapon but also symbolized his keen intellect, as reflected in its meticulously honed kissaki.

The Sōzō Samonji (also known as Yoshimoto Samonji) is celebrated as the blade Nobunaga seized from Imagawa Yoshimoto at the Battle of Okehazama. This sword bears a gold-inlaid inscription reading 'Eiroku 3, Month 5, Day 19—Yoshimoto seized, this is his former waist-worn blade,' and Nobunaga is said to have treasured it as a war trophy throughout his life. In an era when possessing celebrated blades was proof of authority, Nobunaga's sword collection was a direct manifestation of his will to rule all under heaven.

Moreover, Nobunaga engaged deeply with sword culture not only through blades themselves but also through his involvement with tea vessels. At that time, celebrated tea utensils ranked equally with celebrated swords as items of political exchange, and Nobunaga established what he termed 'chanoyu government' through these cultural objects. The pairing of sword and tea vessel symbolized Nobunaga's image as a leader embodying both martial prowess and cultural refinement.

Mitsuhide's Motives and Connection to Sword Culture

Why Akechi Mitsuhide staged his revolt remains 'a four-hundred-year mystery,' and scholarly debate continues unabated. Various theories abound: the resentment theory (humiliation by Nobunaga), the ambition theory (seeking supreme power for himself), and the conspiracy theory (involvement of the court or Toyotomi Hideyoshi). Regardless, Mitsuhide was known as a man of both martial and scholarly accomplishment, with profound knowledge of sword culture.

Tanba (present-day Kyoto and parts of Hyōgo Prefecture), which Mitsuhide governed, was a region producing fine iron sand since the medieval period, with active local swordsmiths. As an able administrator managing regional culture and resources, Mitsuhide is believed to have fully appreciated the value of celebrated blades. Historical records confirm that after the Honnō-ji Incident, Mitsuhide confiscated Nobunaga's treasures, and it is presumed these included swords.

The Reality of the Night of the Incident and Swords in Action

In the early hours of June 2, Nobunaga was lodging at Honnō-ji with only a small retinue of pages and guards. Mori Ranmaru (Mori Narikatsu), one of his officers, accompanied him as a trusted attendant. When Mitsuhide's forces breached the temple, Nobunaga took up his bow and fought with a long sword, but as flames consumed the building, he took his own life. Ranmaru too met his fate alongside his lord.

Many of the celebrated blades Nobunaga possessed are said to have either perished in the flames of Honnō-ji or been seized by Mitsuhide's forces. A theory exists that Nobunaga owned a celebrated blade called Fudō Yukimitsu, and its whereabouts remained a topic of fascination among warlords long after the incident.

The Fate of Swords After the Incident and Cultural Legacy

The Honnō-ji Incident brought a profound rupture in the sword culture Nobunaga had cultivated. Nobunaga's surviving retainers inherited or contested for celebrated blades. Toyotomi Hideyoshi defeated Mitsuhide at the Battle of Yamazaki, and upon inheriting the position of supreme ruler, collected and organized Nobunaga's former treasures as symbols of authority. The succession of celebrated blades was inseparable from the transfer of political power.

Another cultural consequence of the Honnō-ji Incident was the transformation of suki—the spirit of refined aesthetic taste. Nobunaga's death signified not only the collapse of his ideology of unification through military force, but also became a catalyst for his successors Hideyoshi and Tokugawa Ieyasu to pursue governance through culture. The lineage of sword appreciation culture—from Hideyoshi's golden tea room and blade collection to Ieyasu's compilation of the Kyōhō Meishobutsu-chō—demonstrates the enduring strength of Japanese culture, transcending this rupture to continue unbroken.

Legacy for the Modern Era

Honnō-ji still stands today in Chūkyō Ward, Kyoto (having been relocated and reconstructed), and Nobunaga's memorial service is held each year on June 2. The Heshikiri Hasebe, closely associated with Nobunaga, is currently housed in the Fukuoka City Museum and designated a National Treasure. The Sōzō Samonji passed from the Toyotomi to the Tokugawa line and is now enshrined at Kenun Shrine in Kyoto. These swords stand as living witnesses to the Honnō-ji Incident, conveying this historical event to the present day, and continue to be cherished as masterpieces at the heart of Japanese sword culture.