Asakura / Asai , who has suffered Nobunaga for many years Was destroyed, and Ieyasu Tokugawa and Shingen Takeda, who had been rejected in the Battle of Mikatagahara, died, and Katsuyori's son succeeded, but in the Battle of Nagashino, he was defeated by the Oda-Tokugawa Allied Forces, and the Takeda family became a light in front of the wind.
The former Takeda territory is also becoming the territory of the Oda clan, and it seemed that Nobunaga Oda had no enemy, but Ishiyama Hongan-ji, which is based in Osaka, still remained.
Ishiyama Hongan-ji Temple in Osaka
Hongan-ji is Rennyo VIII lord Around that time, it was expanding into the Hokuriku region, and especially in Kaga, it was a country owned by the scholars and excluded the power of the Sengoku daimyo. As a result, Kaga / Echizen / Omi The annual tribute from the Hokuriku region was carried to the main mountain of Osaka.
Against the background of such great economic power, Kosa 11th Honor Has been advocating the overthrow of Nobunaga since the first term. 1575 By that time, Naka Hongan-ji Temple, where a leading daimyo in Kinai had dropped out, was able to confront Nobunaga for a long time because it was connected to Ikko-ikki in Hokuriku.
Speaking of Echizen's country, it used to be the territory of Yoshikage Asakura, but after defeating Yoshikage, Nobunaga entrusted the territory to the former vassal of the Asakura family. However, because the former vassals fought for power with each other, they were overwhelmed by Hongan-ji Temple, which pierced the plow.
Hokuriku Ikko-ikki
Honganji has been able to confront Nobunaga for a long time thanks to the annual tribute from Hokuriku.
For Nobunaga, it was necessary to manage this annual tribute from Hokuriku.
As I wrote earlier, the country of Echizen was suppressed by the mobilization of Ikko-ikki by Honganji, but not all the disciples followed Honganji. Eventually, the dissatisfaction of those disciples increased, and a feud with the priest sent from Osaka occurred. It will be.
Nobunaga, who did not overlook such a situation, went to Echizen in 1575. At this time, Ikko-ikki strengthened his defense, but he said he had a low fighting spirit due to a feud with the head family, Hongan-ji Temple. Therefore, it will be destroyed without much resistance.
As a result, the annual tribute from Kaga will be cut off, and the distressed Honganji will reconcile with Nobunaga.
Alliance between Mr. Mori and Honganji Temple
The Aki-based Mori family is Mori Motonari At that time, it became stronger, Terumoto In the era, it was a place that had advanced to the east from Bingo to Bizen and Bizen. At this stage, the Mori clan was not openly hostile to Nobunaga. However, the clash with Nobunaga, who was expanding his power to the west, was visible.
Under these circumstances, Mori Terumoto Was banished Ashikaga Yoshiaki Honganji Temple And decide to fight Nobunaga. With this alliance, Honganji became able to receive the support of Mori, and in 1576 he abandoned the peace with Nobunaga and started a rematch.
Nobunaga, on the other hand, surrounds Osaka and attacks the military. However, Mouri Navy Ends in failure because he sent troops to Honganji Temple. After that, Nobunaga continued to siege Honganji, but did not surrender. In fact, in addition to Mouri, Kii's Saika Ikki Also continued to carry troops to Honganji Temple.
Therefore, Nobunaga goes to Kii to cut off the food route. When Saika Ikki asks for surrender, he admits it and reconciles. However, this is superficial and the conflict will continue.
In July of the same year, Kenshin Uesugi communicated with Honganji Temple. Will invade Kaga by taking advantage of the suppression of Noto. Nobunaga greets the Uesugi army at the Tedori River in Kaga, but is defeated.
Matsunaga Hisahide heard of Nobunaga's defeat Rebels. After confirming that there is no pursuit of Uesugi, Nobunaga attacks Hisahide's residence, Shigisan Castle. At that time, Nobunaga issued a surrender recommendation to forgive Hisahide's flat spider tea pot, but Hisahide refused it and filled the tea set with gunpowder and died.
After that, Kenshin Uesugi died, and Kagekatsu succeeded the family reign, but Nobunaga became hostile to the Honnoji Incident.
Separation to Nobunaga Oda and the end of the siege network
From around this time, around Nobunaga Oda, separation Will occur one after another. In March 1578, Bessho Nagaharu of Miki Castle, Harima Province Osamu, in July of the same year, Araki Murashige of Settsu Rebelled against Mouri / Honganji To connect with.
In addition to the rebellion of Bessho Nagaharu and Araki Murashige, Nobunaga, who was in a difficult situation due to the onslaught of the Mori clan, said that he thought about peace with Honganji by his command for a while.
However, Nobunaga, who won the Second Battle of Kizugawaguchi, turned to a counterattack and was able to drop Araki Murashige in 1579 and Bessho Nagaharu in 1580.
In March of the same year when Bessho Nagaharu was dropped, Honganji Temple, which was the center of the third Nobunaga siege network, responded to peace with Nobunaga . It will be. The condition of the peace was that Kosa Honganji would leave Osaka, which was virtually the same as Nobunaga's recommendation for surrender.
The surrender of this Honganji Temple has eliminated the long-standing Nobunaga siege network from the 1st to the 3rd period.
Nobunaga, who made the territory of Kinai rock solid, Hideyoshi Hashiba in the Chugoku region. Katsuie Shibata in Uesugi in the Hokuriku region Kazumasu Takigawa in Hojo, Kanto I will go out to expand the territory. However, Nobunaga Akechi Mitsuhide's rebellion at Honnoji Temple on his way to the Chugoku region for Hideyoshi's reinforcements in 1582. Will be defeated by.
Nobunaga's greatest crisis in this siege was still October 1572 when Shingen Takeda attacked the west. Probably. If Shingen had not been invaded by the sickness, he would probably have been invaded by Takeda even in Nishi-Mikawa, and Nobunaga had to gather his main force to the east for the decisive battle with the Takeda clan.
However, history has sided with Nobunaga. The illness of Shingen and the withdrawal of the Takeda army reduced the pressure in the east, and I think it was possible to concentrate on the suppression of the west.