It is likely that Yasuke could speak or was taught Japanese, perhaps due to Valignano's efforts to ensure his missionaries adapted well to the local culture.
[28] Nobunaga enjoyed talking with him (there is no indication that Nobunaga spoke Portuguese, and it is unlikely that Yasuke would have been able to communicate in classical Chinese, the East Asian
lingua franca of the time). He was perhaps the only non-Japanese retainer that Nobunaga had in his service, which could explain Nobunaga's interest in him.
[28] Yasuke was mentioned in a variant text of the
Shinchō-ki (信長記) owned by Sonkeikaku Bunko (
尊経閣文庫), the archives of the
Maeda clan.
[29] According to this, the black man named Yasuke (弥助) was given his own residence and a short, ceremonial
katana[
dubious – discuss] by Nobunaga. Nobunaga also assigned him the duty of weapon bearer.
[30][
failed verification]
After the
Battle of Tenmokuzan, Nobunaga led his force, including Yasuke, and inspected the former territory of the
Takeda clan. On his way back, he met
Tokugawa Ieyasu.
Matsudaira Ietada, the retainer of Ieyasu described Yasuke as "6
shaku 2
sun (6 ft. 2 in., or 188 cm.). He was black, and his skin was like charcoal." Matsudaira stated that he was named Yasuke (弥介).
[31]
In June 1582, Nobunaga was
attacked and forced to commit
seppuku in
Honnō-ji in
Kyoto by the army of
Akechi Mitsuhide. Yasuke was there at the time and helped fight the Akechi forces. Immediately after Nobunaga's death, Yasuke went to join Nobunaga's heir
Oda Nobutada, who was trying to rally the Oda forces at
Nijō Castle. Yasuke fought alongside the Nobutada forces but was eventually captured. When Yasuke was presented to Akechi, the warlord allegedly said that the black man was an animal as well as not Japanese and should thus not be killed, but taken to the Christian church in Kyoto, the
Nanbanji (
南蛮寺).
[21][2] However, there is some doubt regarding the credibility of this fate.
[32][24] There is no further written information about him after this.