The Sendai Domain's public income was 620,000 koku, but the Sendai Domain's geographical location was unique, with the Sendai Plain within its territory, and Ishinomaki, Kesenwan, and the Megawa River were rich in aquatic products. The Sendai Domain had a developed economy, and its actual income was as high as 2 million koku, making it the most expensive feudal kingdom in Toei at that time.

The current lord of the Sendai Domain, Date Tadamune, married a woman from the Tokugawa clan and established a strong relationship with the shogunate. As the most loyal supporter of the shogunate, nearly half of the Sendai Domain's forces were transferred to Edo, which created the conditions for Kyushu to seize the Sendai Domain. In fact, this situation existed in all the Tohoku domains. When the Kyushu army wreaked havoc in the northeastern part of Honshu, the Tohoku feudal clans could only protect themselves and could not provide assistance to the other feudal domains.

Date Tadamune was also unable to fight against the Kyushu army alone, so he had to implement a contraction defense and concentrate all his forces in the area of Sendai Castle to wait for reinforcements.

On June 6, an army of 80,000 led by Zheng Zhihu entered the vicinity of Sendai Castle from the north. On the 8th, the 50,000 combined forces of Kyushu and Kubota led by Shi Daxuan also entered the vicinity of Sendai Castle, and the two armies completed the siege of Sendai Castle.

Sendai Castle is a Renguo-style Hirayama Castle built on Mt. Aoba, and when Date Masamune built Sendai Castle, he didn't even set up a castle tower to prevent Shogun Tokugawa Ieyasu from guarding him, so it can be seen that the castle's defense power is not high. However, after the massacre of Morioka Castle, the entire Sendai Castle was determined to die for this defense.

On the 9th, under the fierce artillery bombardment of Kyushu, the Kyushu army captured Sannomaru, but in Sannomaru encountered fierce resistance from the Kyushu army, and the residents of the city joined the war against the Kyushu army, and after the Kyushu army entered Sannomaru, it was driven out by the defenders and residents of the Sendai domain.

"My lord, the resistance in the city is very fierce, and after our army entered Sannomaru, it faced resistance from various forces in the city, and even women and children joined it, so that our army had to withdraw from Sendai Castle." Yoshitaka Satake fought for the Kyushu Army for the first time, but he didn't expect to suffer a small setback, which made him very depressed.

"My lord, I suggest attacking with fire, our army can't stay in Sendai Castle for too long, according to the news, now the shogunate's reinforcements are already on the way." Shi Daxuan suggested.

"My lord, if you use fire attack, I'm afraid Sendai Castle will be destroyed." Yoshitaka Satake said softly.

"There is no other way now, our army must take Sendai Castle within five days, so that we can completely occupy the northeast before the shogunate reinforcements arrive." Shi Daxuan said disapprovingly.

"Then attack with fire, tomorrow's siege will be in charge of Shi Dudu, after taking Sendai City, there will be no chickens and dogs, I want everyone to know that those who dare to resist the Kyushu army have only a dead end." Zheng Zhihu said viciously.

"No."

……

The next day, Shi Daxuan led an army of 20,000 to attack Sannomaru again. Shi Daxuan is different from Yoshitaka Satake, after he attacked Sannomaru, he first started arson, and then killed people when he saw them, and for a time Sannomaru became a hell on earth. Under Shi Daxuan's massacre and expulsion, the desperate residents of Sannomaru were forced to flee to Ninomaru. And the fire of Sannomaru also spread to Ninomaru.

After Shi Daxuan captured Sannomaru, he did not immediately attack Ninomaru in Sendai City, but withdrew from Sannomaru and repaired outside the city, and now Sannomaru is in a fire and cannot stay at all.

The fire of Sannomaru burned until the evening before gradually extinguishing, and the entire Sannomaru was reduced to ruins, and even a third of Ninomaru was burned.

On the 11th, Shi Daxuan launched an attack on Ninomaru, compared to Sannomaru, Shi Daxuan felt that the attack on Ninomaru was much easier, maybe the residents of Sendai Castle were killed by the Kyushu army yesterday, and Shi Daxuan's army captured Ninomaru like a bamboo.

On the 12th, the Kyushu army captured Honmaru in Sendai Castle again. Although Honmaru's resistance was very fierce, in the face of the high-morale Kyushu army, the defenders of Honmaru only resisted for most of the day.

After seizing Sendai Castle, in order to take revenge on the people of Sendai Castle, Zheng Zhihu ordered the four gates to be closed, and the whole army slaughtered Sendai Castle. The 150,000 army slaughtered the city at the same time, and only two days later, the entire Sendai Castle was slaughtered, and in the end, only more than 10,000 women survived in Sendai Castle, which was ordered by Zheng Zhihu to stay.

The capture of the Sendai Domain provided sufficient food for the Kyushu army, and the wealth obtained from the capture of Sendai Castle was enough to compensate for all the military salaries of the shogunate on this expedition. Only now did Zheng Zhihu understand that the real war is robbery in the final analysis, and the slaughter of the city is the highest state of war and war.

The capture of the Sendai Domain caused the swinging Yonezawa Domain to change its flag and announce its entry into the Kyushu Army. The Uesugi clan of the Yonezawa clan had been at odds with the Tokugawa clan until the Battle of Sekigahara. After Tokugawa Ieyasu seized the world, the Uesugi clan was punished, and although Tokugawa Ieyasu did not confiscate all of the Uesugi clan's territory, he reduced his stone height to 300,000 koku, which made the Uesugi clan's loyalty to the shogunate not high.

The surrender of the Yonezawa clan left the entire northeastern part of Honshu no longer strong enough to resist the Kyushu army. The Kyushu army began to actively switch from offensive to defensive, preparing for defense, and sent an army of 100,000 from Edo.

And the news that the Kyushu Army was equipped with advanced Apocalypse guns also reached Edo at this moment, which made the reinforcements from Edo change their original intentions and change from offensive to defensive. And the shogunate also began to actively seek to buy the Apocalypse Gun, but the relationship between the Ming Dynasty and Kyushu was close, and the Shogunate could not buy the Apocalypse Gun from the Ming Dynasty, so they had to find a way to buy the Apocalypse Gun from the Westerners, and the Westerners' Apocalypse Gun began to be reloaded, and they couldn't even satisfy themselves now.

The loss of Tohoku in Honshu exposed the entire Kanto region to the Kyushu army, and made it even more difficult for the shogunate, which was already in financial difficulties, and Tokugawa Iemitsu fell ill under a series of unfavorable news.

By October, Tokugawa Iemitsu's condition continued to worsen, and on October 20, Tokugawa Iemitsu died of illness. Tokugawa Iemitsu passed away a few months earlier than his original history. On the verge of death, Tokugawa Iemitsu summoned Masayuki Hoshina to his pillow and entrusted the Tokugawa Ietsuna, a fourth-generation shogun, who was only nine years old, to him.

Masayuki Hoshina was grateful for Tokugawa Iemitsu's kindness and tried his best to assist Tokugawa Ietsuna. With the assistance of Masayuki Hoshina and the elder Sakai Tadakatsu, the old Naka Matsudaira Nobutsuna, and Abe Tadaaki, Tokugawa Ietsuna officially became the fourth generation of shoguns, which was also the last shogun of the Tokugawa shogunate in this time and space.

After learning that Tokugawa Iemitsu had died of illness and that Tokugawa Ietsuna, who was only nine years old, had succeeded to the throne, Zheng Zhilong once again prepared to crusade against the shogunate.

(End of chapter)