天文法華の乱期
Tenbun Hokke Disturbance Period
The Tenbun Hokke Disturbance turned Kyoto itself into a battlefield between Hokke-shū and Ikkō-ikki forces. The burning of Yamashina Honganji and violent looting throughout the capital forced many Kyoto swordsmiths into provincial flight, accelerating the diffusion of metropolitan sword techniques across Japan.
Description
The Tenbun Hokke Disturbance (1532) erupted from the collision of Hokke-shū (Nichiren Buddhism) and Ikkō-ikki forces amid the political chaos of the Hosokawa-Miyoshi rivalries. The burning of Yamashina Honganji and the violent purge of Hokke-shū from Kyoto the following year devastated the capital's commercial and artisan communities. For sword history, the disturbance triggered the second major wave of Kyoto swordsmith dispersal (the first having occurred during the Ōnin War), scattering smiths who carried Yamashiro tradition's refined techniques into the provinces of Settsu, Izumi, Kii, Iga, and Ōmi. This double dispersal — Ōnin followed by Tenbun — effectively transferred the capital's advanced sword-making knowledge to the entire country, enabling regional sword traditions to flower across Japan. Simultaneously, the Tenbun era saw the expansion of nanban (southern barbarian, i.e., Portuguese) trade through Sakai, introducing new metallurgical knowledge alongside the famous 1543 arrival of firearms on Tanegashima. Sakai's swordsmiths leveraged their commercial city advantages to dominate materials procurement and product distribution across the Kinai region. Under the subsequent Miyoshi hegemony (c.1549–1564), the arts including sword culture flourished amid commercial prosperity linked to Sakai trade. The sword form itself was in transition: the shift from tachi to uchigatana was nearing completion, and the wider-bladed, shallower-curved 'Sengoku姿' uchigatana was becoming standard warrior equipment. The hamon vocabulary was diversifying — gunome, notare, sanbonsugi forms were emerging that would fully blossom in the Momoyama period. The Tenbun Hokke disturbance thus serves as a crucial hinge between the Ōnin-period scattering and the Nobunaga-era sword culture renaissance.
Caracteristiques de cette epoque
- Second major Kyoto swordsmith dispersal following the Tenbun Hokke Disturbance spread Yamashiro tradition techniques to Settsu, Izumi, Kii, and beyond
- Tachi-to-uchigatana transition nearing completion; the wide-bladed, shallow-curved Sengoku-style uchigatana became the standard warrior sidearm
- Nanban trade through Sakai introduced new iron/steel materials and metallurgical knowledge, influencing smith material selection and forging methods
- Mass production of kazuuchi intensified further; functional durability prioritized over artistry as Sengoku-period demand volumes increased
- Hamon vocabulary diversified; gunome, notare, and sanbonsugi forms appearing in Tenbun–Eiroku period works foreshadowed the Momoyama-era aesthetic explosion