In the third year of Yonglu, March 15. Just as Asada's front foot set off for Aizu, Ota Shimasa quickly ordered the general acting officers Yokota Fujishiro, Zhou Nishito Kuro, and Ishikawa Hikoroku to lead an army of 1,000 troops through the Uraga Suido to enter Mizaki Castle, one of the important towns of East Sagami, to assist the lord of Mizaki Castle, Nagano Yoshimori, to garrison in case the Miura Peninsula was attacked by a crowd.

On the one hand, Ota Shimasa quickly mobilized troops from all over the country to quickly stationed in the important towns of Tosami, and on the other hand, he sent envoys to convey the orders of Okabe Motonobu, the lord of Ashigara Castle, the lord of Ebina Castle, the lord of Obina Taichao, the lord of Danma Castle, the lord of Tamajo Castle, Ikeda Motsu, the lord of Tamasho Castle, the lord of Mtama Castle, Nagano Yosei, and the lord of Okazaki Castle, Zen Soji, to defend the castle.

However, at this time, the former Edo family's retainer Egawa Tsukiyo (Edo Toshiyo, Edo family's kinship) and his sons Edagawa Tsukin and Edagawa Hyogosuke gathered the Edo family, Satake family, and other former retainers to raid Iinuma Castle and occupy it.

When Ota Shishimasa learned that Hitachi was unstable, he did not intend to go to pacify it himself, so he first moved his main camp to Shinagawa Minato, and then sent his family's important ministers Minohe Keido, Honma Kogoro, Shioda Shikatsu, Kitazawa Naobu and others back to the territory to gather troops and defend Kita-Toki.

At the same time, the former retainers of the Odawara-Ise clan and the Takeda Army (Katsuyama Army) quickly surrounded Okabe Motonobu's territories such as Ashigara Castle, Kamozawa Castle, and Kawamura Castle, intending to destroy Okabe Motonobu first, and then Asahina Taito, Asahina Shinji, and Ikeda Morishu one by one.

In terms of the Saishigami Touch, the Asadachi realized the importance of the Saiko Touching Ashgara region before the Atatsu, so he transferred the Okabe Motoshin to the Shogami Prefecture and let him possess the Ashgara Castle, Kawamura Castle, Kamosawa Castle and other places. At present, Okabe Motonobu is firmly holding the line of Ashigara Castle, Kawamura Castle, and Kamozawa Castle, blocking the eastward advance of the Takeda Army and the Ichichi Army.

Around this time, the battle at Okazaki Castle in western Kamikawa was also extremely fierce. Okazaki Castle and the Akomi River were the barriers between Higashi Somoku and Minami Musashi, and they were also the main roads to Shinagawa, and the Edo and Shinagawa areas were already important sources of wealth for the Uesugi family at this time. After the Takeda Army and the Ichichi Army occupied Odawara Castle, an important town in the western part of the country, merchant ships and fortunes had to be transported to Shinagawa Minato via Somo Bay and Kaneda Bay, and then from Shinagawa Minato to Kawagoe Castle, the main base of the Asada.

It is precisely because Asadachi built Shinagawa Minato into the best port in the entire southern Kanto region that it supported Asada's ability to use troops against Kanto, Okuwa and other places every year. In order to cut off the economic lifeline of the Uesugi family, the Takeda Army and the Ichikugawa Army had to send large armies to storm Ashigara Castle and Okazaki Castle one after another.

"Ota Saemon Saden, according to the detailed report, the Takeda family has begun to assemble a large number of troops in Kita-Shinano, intending to invade Nishi-Ueno. We need to deploy defenses in Ueno, Musashi, and Xiangfu at the moment, which is simply difficult for us to climb! "Hosoya Shitomo felt that he would not be able to recruit so many troops to guard the border in a short period of time

"Ota Saemon Saden, according to the detailed report, more than 3,000 Takeda troops have entered the Sai Xiang Touch and joined the Ichika Bun, and will soon join the attack on Okabe Tanba Mamoru and other generals." Yamagami Michikazu began to worry about Okabe Motonobu's situation.

"Okabe Tanba Shouqi is located right on the main road of Sai Xiangmo, just blocking the road for the Takeda army to advance eastward and a group of people to the north, I have sent his retainers to order him to defend Ashigara Castle to the death, as long as he can hold Ashigara Castle for two months, then the military forces of the lower general, upper general, and lower fields will be able to reach the eastern prime without any problems." Ota Shimasa wanted Okabe Motonobu to contain the Takeda army and the group for two months to buy time for him to mobilize the military forces of the lower general, the upper general, and the lower field.

"Two months?! Ota Saemon Saden, you ······ How could Okabe Tanba Moriden hold out for two months without reinforcements?! "Toshimitsu Anazawa didn't think that Motoshin Okabe would be able to hold his territory for two months without help.

"But at the moment, I have not been allowed to transfer the lord's Shangshu soldiers, and now I can only hope for Okabe Tanba Mamoru. As long as he can hold on to his territory for two months, then we will be able to gather more troops to rescue Sagami. Ota Zimasa was also helpless at this moment, and when he was leaving, he did not hand over more than 6,000 Shangshu soldiers to him to command, but only arranged these standing troops in the mountains on the border between Kai and Musashi, such as Mt. Chichibu, Mt. Santou, and Mt. Ryojin.

Because the previous imperial order of Saito Toshizo, Hirosawa Tadanobu and other generals to lead the army to Tokura Castle, Takiyama Castle, Chichibu Mountain, Mita Castle, Takatsuki Castle, Hachioji Castle, Takiyama Castle and other important places in Minami Musashi, to strictly prevent the Takeda family's Hosaku and the Oishi family's former retainers from entering Musashi, so Oishi Dingji, Oishi Nobuki, Oishi Terumonaka, Oishi Dingxian and other former Musashi Daishi family ministers had no choice but to unite with the Takeda Army and the Ichichi Army to attack and fall Sagami.

For a time, Sagami was a 'swarm of thieves and bees, and the city was trapped'. In order to concentrate his forces to garrison the important towns of Sagami, Kawamura, and Kamozawa Castle in Nishisagami, Okabe Motonobu transferred all the defenders and grain and ordnance of Matsuda Castle, Shinjo, Yunosawa Castle, Horinouchi Castle, and Oi Castle, which led to the Takeda Army and a group of people capturing and occupying most of the branch castles in Okabe Motonobu in a short period of time without much effort.

On the other hand, the new governor of the Odawara Ise family, the Ise clan Takashi (grandson of Ise Fantasy Temple), who was appointed by the Takeda family, sought help from the Takeda family after stabilizing the two counties of Ashigara Shita and Toaya, hoping to get the support of the Takeda family's Suruga naval army. Because Iseshi Takashi knew very well that once the Boso Peninsula under the command of Asadachi was crossed the sea and marched westward by Okamoto Yorimoto, Anzai Katsuhiro and other generals, then the entire Sagami Bay would be blocked in a short time, and the Odawara Iseya would lose the sea transportation line.

More than 3,000 generals from Izu, including Yonekura Shigetsugu (lord of Yamanaka Castle), Ifuku Arikiyoshi (lord of Atami Castle), Tadashi Aonuma (lord of Yazaki Castle), and Nobumori Iwate (lord of Kano Castle), who were originally sent by Takeda Shingen, also marched out from Yamanaka Castle, Atami Castle, Daizaki Castle and other cities on the border between Sagami and Izu provinces, and the troops were directed at Okazaki Castle and Oshiki Castle led by Zen Soji.

At the same time, the people of Suruga Province, the lord of Katsuyama Castle, Katsuyama Clan, continued to transport grain, grass and ordnance to Fukasawa Castle, Mahayana Temple, Senfuku Castle, Nagawa Castle and other places close to the border of Sagami Province, and his retainers Katsuzen Katsuzen, Katsuyama Motokiyo and other generals also led more than 1,000 troops together with 5,000 people led by Okkawa Hyogo, Shimizu Echizen Mamoru, Yamakaku Jibu Daisuke, Yamamoto Shinanomori and other generals to encircle Ashigara Castle and Kawamura Castle respectively, and besieged the castle and dug a hori, and built a fence outside the hori, for a long-term siege. Not only that, but they also recruited a large number of local leaders to join in the surrounding area, making their army more and more powerful.

Soon, the army led by generals such as Katsukiyo Katsuyama, Katsuzen Katsuzen, Okawa Hyogo, Mamoru Shimizu Echizen, Daisuke Yamakaku Jibu, and Mamoru Yamamoto Shinano swelled like a snowball, swelling to more than 10,000 men in a short period of time. This army of more than 10,000 people surrounded Ashigara City and Kawamura City, and there was no gap. Fortunately, Okabe Motonobu quickly evacuated the lords of the castle town and the surrounding villages into the castle one step earlier. Fortunately, after nine months of thorough preparation, there was no shortage of food and water sources in Ashigara Castle, Kawamura Castle, and Kamozawa Castle, and the high walls and deep walls of Ashigara Castle alone were enough to protect nearly 10,000 soldiers and civilians in the city.

However, there is one point that Motonobu Okabe still made a budget mistake. The Odawara Ise family and the Takeda family were bent on completely capturing Ashigarami-gun and Tsukui Prefecture so that they could take advantage of the situation to go north and attack Musashi. Therefore, the Odawara Ise Army and the Takeda Army had to capture Ashigara Castle, Kawamura Castle, and Kamosawa Castle no matter what. Due to the fact that Katsuyama Motokiyo, Katsuzen Katsuzen, Okawa Hyogo, Shimizu Echizen Mamoru , Yamakaku Jibe Daisuke, and Yamamoto Shinano Mamoru sent several times to persuade Okabe Motonobu to surrender, Okabe Motonobu simply surrounded Ashigara Castle, Kawamura Castle, and Kamosawa Castle and cut off contact with the outside world. The endless siege battles that followed put great pressure on the defenders of Ashigara Castle, and the days of three shocks a day were really not easy, and Okabe Motoshin was so sad that almost his temples turned white. The more than 6,000 people living in the castle and more than 1,000 defenders were holding on under tremendous pressure, but Okabe Motonobu was determined to hold out until the last moment, knowing that once Ashigami and Osumi were lost, then Takaza-gun, Kamakura-gun, and Miura-gun in the rear would be in no danger to defend.