細川勝元

Hosokawa Katsumoto (1430–1473) was the Kanrei (shogunal deputy) of the Ashikaga shogunate who became one of the two principal actors in the Onin War, the eleven-year conflagration that reduced much of Kyoto to ash and effectively ended the medieval Japanese social order. As head of the Hosokawa clan — the most powerful of the three kanrei families — Katsumoto governed vast territories across Kinai and Shikoku while serving as the indispensable prop of the ineffectual Shogun Yoshimasa. When rival claimants to the shogunal succession drew the great daimyo houses into opposing camps, Katsumoto led the Eastern Army against the Western Army of his rival Yamana Sozen. For eleven years their forces clashed in the streets of Kyoto while temples, mansions, and centuries of cultural accumulation burned. Yet Katsumoto was also the founder of Ryoanji temple, whose rock garden became one of the world's supreme expressions of Zen aesthetic — demonstrating that the man who burned Kyoto also built one of its most beautiful things. He died in 1473, the same year as his great adversary Yamana Sozen, leaving behind a devastated capital and a transformed sword culture: the Onin War scattered sword smiths across Japan, diffusing regional techniques and laying the groundwork for the diverse Sengoku-era blade traditions.