With the introduction of firearms into Japan he became known for his fondness for tanegashima guns. Nobunaga was a clear speaker with a strong presence about him, and was known to run around with other youths from the area, without any regard to his own rank in society. Nobunaga was given the childhood name of Kippōshi ( 吉法師), and through his childhood and early teenage years became well-known for his bizarre behavior, receiving the name of Owari no Ōutsuke ( 尾張の大うつけ, The Fool of Owari). Nobunaga is said to have been born in Nagoya Castle, the future seat of the Owari Domain, although this is subject to debate. Oda Nobunaga was born on 23 June 1534 in Nagoya, Owari Province, and was the second son of Oda Nobuhide, the head of the powerful Oda clan and a deputy shugo (military governor), and his wife Dota Gozen.
However, he died in 1598, and Tokugawa Ieyasu took power after the Battle of Sekigahara in 1600, becoming shogun in 1603, and ending the Sengoku period. Toyotomi Hideyoshi later united Japan in 1591, and invaded Korea a year later. Nobunaga was an influential figure in Japanese history and is regarded as one of three great unifiers, along with his retainers Toyotomi Hideyoshi and Tokugawa Ieyasu. Nobunaga was succeeded by Toyotomi Hideyoshi, who along with Tokugawa Ieyasu completed his war of unification shortly afterwards. Nobunaga was killed in the Honnō-ji Incident in 1582, when his retainer Akechi Mitsuhide ambushed him in Kyoto and forced him to commit seppuku.
Nobunaga's rule was noted for innovative military tactics, fostering of free trade, reforms of Japan's civil government, and the start of the Momoyama historical art period, but also for the brutal suppression of those who refused to cooperate or yield to his demands. He conquered most of Honshu island by 1580, and defeated the Ikkō-ikki rebels in the 1580s. Nobunaga emerged as the most powerful daimyo, overthrowing the nominally ruling shogun Ashikaga Yoshiaki and dissolving the Ashikaga Shogunate in 1573. Nobunaga was head of the very powerful Oda clan, and launched a war against other daimyos to unify Japan in the 1560s. His reputation in war gave him the nickname of "Demon Daimyo" or "Demon King". He is regarded as the first "Great Unifier" of Japan. Oda Nobunaga ( 織田 信長, listen 23 June 1534 – 21 June 1582) was a Japanese daimyo and one of the leading figures of the Sengoku period.