In 1543, a ship transporting Portuguese sailors, accompanied by a man named
Wufeng, arrived near
Tanegashima island. The Europeans were brought to Tokitaka, who was only 15 years old, and demonstrated in front of him the use of
arquebus firearms. Lord Tanegashima Tokitaka instructed his swordsmith, Yaita Kinbei Kiyosada (八板金兵衛清定), to create functional replicas of the objects, the first ever Japanese-made. The smith (Yaita) did not have much of a problem with most of the gun but "drilling the barrel helically so that the screw (
bisen bolt) could be tightly inserted" was a major problem as this "technique did not apparently exist in Japan until this time." Tanegashima Tokitaka, quickly acquired the methods of producing firearms and gunpowder. Due to Tanegashima's role in the spread of firearms, firearms were colloquially known as "
Tanegashima (gun)" in Japan. Tanegashima Tokitaka was reported to have constantly practiced with the firearm. == Siege of Kajiki ==