Oda Nobunaga (織田信長), the head of the post-three unifiers during the Warring States period in Japan, withdrew from the stage of history after the Incident at Honnō-ji (June 21, 1582). He was originally a military commander who was most likely to end the Warring States period. Unfortunately, this was counterproductive.
It is Nobunaga's favorite general, Akechi Mitsuhide (明智光秀), who was the cause of the incident. Mitsuhide was reorganizing his own troops and was ready to set off for the Chūgoku region to support Hashiba Hideyoshi (羽柴秀吉), who was renamed to Toyotomi Hideyoshi (豐臣秀吉) later. Unexpectedly, not only did Mitsuhide not go to support Hideyoshi who was fighting in the front line, but instead went to Honnō-ji where Lord Oda Nobunaga was located.
Nobunaga fought with a long spear and wounded, and finally killed himself. He was buried in the sea of fire and his whereabouts were unknown. In this battle, almost all the followers who followed the Nobunaga's more than 100 names were killed. Nobunaga's heir, Oda Nobutada (織田信忠), also led a battle with Nijo Castle, not far from Honnoji Temple, and then killed himself as well.
After this incident, Toyotomi Hideyoshi, who was one of the three post- Warring States unifiers, replaced Oda Nobunaga and roughly completed the unification of Japan.