Mōri Katsunaga

Mōri Katsunaga (1578–1615) was a warrior from Buzen Province (parts of present-day Ōita and Fukuoka Prefectures) and the eldest son of Mōri Katsunobu, who served Toyotomi Hideyoshi. During the Osaka Campaigns (1614–1615), he distinguished himself as a Toyotomi general alongside Sanada Yukimura, and particularly at the Battle of Tennōji-Okayamaguchi on May 7, 1615 (Keichō 20), he displayed a fierce assault that pressed close to Tokugawa Ieyasu's headquarters, shaking the enemy forces. He is remembered through the ages as a tragic distinguished general who fought through to the final bitter battles on the Toyotomi side.

Katsunaga was born in Tenshō 6 (1578) as the son of Mōri Katsunobu. From early childhood he served Toyotomi Hideyoshi as a page, and also participated in the Korean campaigns (Bunroku-Keichō no eki). At the Battle of Sekigahara in Keichō 5 (1600), he sided with the Western Army (Ishida Mitsunari's faction), and after defeat was exiled to Tosa (present-day Kochi Prefecture) together with his father Katsunobu. In Tosa he was placed under the supervision of Yamauchi Kazutoyo, but in Keichō 19 (1614) he entered Osaka Castle and fought in the Osaka Winter and Summer Campaigns under Toyotomi Hideyori.

In the final phase of the Osaka Summer Campaign on May 7, 1615 (Keichō 20), Katsunaga clashed with the vanguard of the Tokugawa forces at the Tennōji entrance. Together with his elite subordinates, he broke through the Tokugawa frontline and displayed a fierce assault that pressed close to Ieyasu's headquarters. This valiant fighting is remembered alongside Sanada Yukimura's charge as "the greatest spectacle of the Osaka Campaigns." With the fall of the Toyotomi clan, Katsunaga died by his own sword within Osaka Castle, ending his life at the age of 38.

In his relationship with Japanese swords, Katsunaga was a fierce general on the battlefield who utilized the Japanese sword to its fullest as a practical instrument of war. Among the rōnin who gathered for the Osaka Campaigns, Katsunaga was particularly known as a general of outstanding martial valor, and his cherished sword was passed down as a symbol of loyalty to the Toyotomi clan. Even during his exile in Tosa, he reportedly never neglected his martial training, and it is said that when he entered Osaka Castle, he prepared his armor including his swords with full resolve. The cherished sword of Mōri Katsunaga is inscribed in sword history as an indispensable legacy for discussing the practical warfare and bushido spirit of the late Sengoku period.