Osaka Castle

Connection to Swords

When discussing the relationship between Osaka Castle and the Japanese sword, one cannot avoid the "Sword Hunt Edict" (Katanagari-rei) issued by Toyotomi Hideyoshi in Tenshō 16 (1588). This policy, which confiscated swords, short swords, bows, spears, and firearms from farmers ostensibly for use as nails for the Great Buddha statue of Hökaiji, fundamentally transformed Japan's social structure, establishing the sword as a symbol of samurai status — a historic turning point. Thereafter, the wearing of a sword became the exclusive privilege of the warrior class, and the Japanese sword transcended its role as a mere weapon to become a symbol of status and honor. Hideyoshi himself was an exceptional collector of renowned swords, amassing masterpieces from throughout the country during the process of unifying Japan. The most celebrated of Hideyoshi's personal swords is "Ichigo Hitofuri" (forged by Awataguchi Yoshimitsu), a name derived from "the single blade that Yoshimitsu forged in his lifetime." Though damaged during the Summer Campaign of Osaka, it was later re-edged by the Tokugawa family and is now transmitted as a possession of the Imperial household. During the Siege of Osaka, Sanada Yukimura executed a magnificent assault on Tokugawa Ieyasu's main camp, demonstrating the pinnacle of swordplay in battle. In these campaigns, many renowned swords were employed in actual combat, and many blades were lost to the flames of war. With the advent of the Edo period, Osaka became the economic center of the realm, the "Kitchen of Japan," and a new era of sword culture flourished, known as "Osaka Shintō." Inoue Shinkai, who produced Important Cultural Property works, earned the epithet "Osaka Masamune" for the exceptional beauty of his hamon (temper line), while Tsuda Sukehiro pioneered the "Nami Ranba" (Wave Turbulent Blade), an innovative undulating temper pattern resembling ocean waves. These two masters were regarded as the yokozuna of the Shintō period, and Osaka, together with Edo, became one of the two great production centers of the Shintō era. By visiting both the exhibits in the Osaka Castle Keep and the Osaka Historical Museum, one can gain deep understanding of Hideyoshi's sword policies and the world of Osaka Shintō. Osaka, though a merchant town, was also a major hub for sword distribution and sales, with sword merchants lining its streets. The merchants of Osaka were connoisseurs who brokered renowned blades to regional daimyo and samurai, and the culture of sword appreciation and authentication developed alongside this marketplace. Osaka Castle, the seat of the realm's ruler, is simultaneously the source of the "Sword Hunt Edict" that determined the social value of the Japanese sword — the most significant castle in sword history.