Oda Nobunaga was a powerful feudal lord in late 16th-century Japan. For almost 200 years, Japan had seen near-constant warfare between daimyo, lords like Oda. Although the emperor was nominally in charge of the Japanese people, his real power was ceded to the Shogun, a general who administered the government. The ongoing wars between lords were often over succession. Three subsequent warlords, Oda Nobunaga, Toyotomi Hideyoshi, and Tokugawa Ieyasu, were the ones who finally unified Japan.
Fighting alongside Oda was Yasuke, a man from Mozambique who had proven himself worthy of the title "Samurai."
Yasuke came to Japan in 1579 with an Italian missionary. Though it can't be confirmed, historians believe Yasuke was from Mozambique, as many of the first Africans to arrive in the Pacific island nation were from Mozambique. The young Mozambican's black appearance was definitely noticeable in the Japanese capital. He was presented to the Daimyo Oda Nobunaga, who forced the man to strip and clean himself, not believing his skin was naturally black. When he finally accepted this, he eventually adopted Yasuke into his own service, impressed with the African's strength and physique.
Oda provided Yasuke with money, a residence and his own katana. The now-former missionary was given the post of the Daimyo's weapon bearer and soon found himself in battle.
The Battle of Tenmokuzan pitted Oda and Tokugawa Ieyasu against their longtime rival Takeda Katsuyori. Katsuyori burned his own castle and tried to escape into the surrounding hills but ended up committing ritual suicide before Oda and Tokugawa could capture him. The Tokugawa leadership describes Yasuke as standing more than six feet tall and having skin as black as charcoal.
But Oda's luck would soon run out, and the noble Oda Nobunaga was forced to commit suicide by rival Samurai and lord Akechi Mitsuhide at a Buddhist temple in Kyoto. Yasuke was present for Oda's seppuku and joined his successor Oda Nobutada's army to avenge the elder Oda's gruesome end. He was captured fighting Akechi forces at Nijo Castle but was not killed because he wasn't Japanese.
Yasuke does not appear in historical records after his capture at Nijo Castle, perhaps being returned to the Jesuit order which originally took him to Japan.