Since the defeat and death of the Echichu guardian Daijimbo Nagashi in the Echichu Slippery River area by the combined forces of Ogiya Uesugi and Fuchu Nagao, the Echichu guardian Jimbo clan has declined. However, the Jimbo Choji left behind a son, the Jimbo Chokuni (Jimbo Chokuni). Since the defeat of the Jimbo family, after the defeat of the Jimbo family, he fled to Kita-Shinano under the protection of several former retainers of the Jimbo family, and was sheltered by the Takeda family, and since then he has been lying dormant in Kofu, waiting for the opportunity for the Jimbo family to revivenation.

In order to be able to contain Kenshin in Hokuriku Province and unable to send troops south, Takeda Shingen had no choice but to send Jimboho Nagakuni, Terashima Igetari (former Echichu Ikeda Castle Lord), Yamada Shu, Iida Toshitada (former Echichu Ida Castle Lord), Irizen Yataro, Matsubara Dewa Mamoru, Takeki Ishimi Mamoru, Tahara Shingo, Inagawa Hanta and other daimyo and Shiina clans, and the remnants of the countrymen lords to Dongetsuchu to recruit the former retainers of the Jimboh family, local samurai and ronin, etc., and to incite the Kotoshi lords of Noto as much as possible. The samurai of the land once again mobilized the people of the country, so that the Kaga ancestors could successfully invade the Kaga country and contain the Kakizaki Keijia.

Today, among the relatives of the Jimbo clan, only the brothers of the Jimbo clan are left to Jimbo Nagayori (the son of Jimbo Keizong's brother Jimboh Sosei), Jimbo Nagashige (the son of Jimbo Keizong's brother Jimbo Nagashige), Jimbo Shigemasa (the son of Jimbo Nagashige), Jimbo Dehamoru (the Jimboh family was killed, and then fled to Tateyama to hide), Jimbo clan chief (Jimbo clan Zhang second son), Jimbo Nagari (Jimbo clan Zhang Sannan) and others are still living incognito in Vietnam. Since the demise of the Shenbao clan, they did not dare to show their faces again, so they could only quickly hide in the deep mountains and old forests to save their lives and preserve the bloodline of the Shenbao clan.

Even the former lord of Ikeda Castle, Terarishima Yoshijo, fled with his family to the Takeda clan after the defeat and death of the Jimbo Cho Rank, and this time he was also sent by Takeda Shingen to serve as the rear officer of the Jimbo Chokuni.

However, Takeda Shingen's actions were discovered by Kenshin's Xuanyuan people, who quickly informed Kenshin of the matter, so that the Uesugi family could be prepared in time for the border between East Vietnam and Northern Shinano.

In order to prevent the remnants of the Jimbo clan such as Jimbau, Nagaku, and Terashima Idanari, from entering the country smoothly, Kenshin quickly ordered Ueno Kubei (Kenshin Shigetomi Ueno family to be the same clan), Ueno Hikojiro, Ueda Ishimi Mamoru Matsubara, Matsubara Goro Hyoe Naohara, Ono University Suke (former Terazaki family retainer) and other Echichu local samurai stationed in the North Missile to return to East Echietaka and fight with Jimbo Takasu (Echichu Jimbo family Shuliu) to guard against the former retainers of the Jimboh family. The North Missile was garrisoned by Cheng Jingmao (the son of the jade insect Zhenmao).

In order to prevent the Noto country from being affected by the Vietnamese Chinese again, and by the way, so that the lords of the Noto people and the samurai of the land would not be easily turned against by the Takeda family, Kenshin asked the former Hatakeyama Yoshiharu (son of Hatakeyama Yoshisu, brother of Hatakeyama Yoshitsuna, and adopted son of Kamijo Masashi) to marry the late Nagao Masakai's eldest daughter Hua Ji and inherit the name of the craftsman Hatakeyama family, and serve as the guardian of Noto to let him settle in the castle and receive Ishichi Yuki.

Jimbo Takasuke had previously taken the initiative to fall over to the Uesugi family and asked for the Jimbo clan Xing (the eldest son of the Jimbo clan), who was supported by Kaga Ichichi to succeed the Jimbo family. Because he had not taken the initiative to hand over the head of the Jimbo clan to the court or Kenshin, he was not rewarded by the territory. This time, when he heard the news that Jimpo Nagakoku was about to return to Echichu, he immediately came to the spirit that as long as he took Jimpo Nagakoku, then the drip of the Echichu Jimbo clan would be completely cut off, and he would be rewarded with a lot from Kenshin and Chojo.

At the same time, after Nanbu Harumasa withdrew and returned to his domain, Mori Jingguang also quickly stabilized the Gaoshuiji Sibo Domain, and killed several former Gaoshuiji Sibo family officials who fell to the southern family. Subsequently, generals such as Mori Keihiro, Saito Toshi, Oshinori Beizen, Kanhee Mitsutoshi, and Kankawae Hirotoshi led their troops back to the Central Artillery for repairs.

With the subordination of the former Oshu explorer Takamizuji Spo family, the southern family's southward expansion strategy has been greatly curbed, and although the southern family dominates the northern Mutsu, its interior is not monolithic. The plan of the court was to secretly win over the nine families so that they could contain the southern family, and if necessary, give the nine families the status of a daimyo.

During the Warring States period, Hokuritsu can basically be said to be a dispute represented by the southern clan and its relatives, and the clan. Except for the southern clan, the others are small forces that cannot influence the situation too much, and strive to survive in the troubled times through mergers and marriages. Until the advent of Tsugaru Noshin, there was a touch of excitement at the end of the Warring States period of the Northern Aoku.

Speaking of the situation in the northern part of Mutsu Province during the Warring States Period, it can be said that the core was the Karanbe Prefecture and the powerful Daimyo Nanbu clan that ruled the prefecture. The Kuranbe Gun, which is referred to as the "O-gun" in the Oshu Yume Records, was the largest prefecture in Japan at the time, and it was divided into a number of districts, including the East Gate, the West Gate, the South Gate, and the North Gate, and some areas were not much different in size from one county in other countries.

In the Muromachi period of the 15th century, the "households" of the "southern clan of Oshu chaffe" were the one, three, four, seven, eight, and nine households (in order not to cause confusion, the following may be referred to as a certain household or the southern part of the country depending on the context, and the well-known southern Harumasa is derived from the Sanhe clan). The ancestor of the southern clan, Nanfang Guangxing, has six sons, and the eldest son Xingchao is a concubine and is the ancestor of a family; The second son, Shimitsu, inherited the clan; The third son, Minoru Hakii, is the ancestor of the southern clan of the eight households of Nechijo; The fourth son, Chaoqing, is the ancestor of the Seven Households and the Jiuji Clan; The Five Sons Dynasty is the ancestor of the Four Households and the Kushiyin Clan; The six sons of the clan are the ancestors of the Kunohe clan, the Kokami clan, and the Ekoshi clan), all of whom used the word "south" as the Miao character, forming a vast network of kinship relationships, and through this relationship, they jointly dominated the province of Kubu. Among them, the Sanhe clan, known as the "Southern Temple", gradually gained the status of the general leader of the Southern Clan.

In the late 15th century, the Minohe clan began to expand their influence around Kabube-gun. The Tsugaru region on the western side, which included the four prefectures of Hiraga, Nosewa, and Tensha, and the Yamabe districts, as well as the outer and western regions of the Tsugaru Peninsula (the northern and western parts of the Tsugaru Peninsula, which were not included in the sub-prefectures in the Middle Ages), were originally controlled by the Shimokuni Ando clan (the Ando clan was commonly known as the Anto clan, and the name of the Ando clan began to appear in the mid-to-late Muromachi period). In the fourth year of Eternal Enjoyment, the Minohe clan attacked the Ando clan, and the Ando clan was defeated and retreated to Ezo, and the Minohe clan gradually took control of the Tsugaru region; In the first year of Choroku, the Hachinohe clan defeated the Oysaki Tibetans, a retainer of the Ando clan, and occupied the last territory of the Ando clan in this area, Uzen Ryori Village; In the fifteenth year of civilization, the Minohe clan was in charge of Nanbu and ordered his younger brother Yukimi to become the representative of Tsugaru County, and built a stronghold in the eastern part of Tsugaru Waihama and established the Tsutsumi family; In the seventh year of Ming Ying, Nanfang Xinshi ordered his son Kang Shi to go out of Jidi's house. In the second year of Bunkame, the year of the death of the southern Shintoki, the concubines of the Kaitsu (southern) Yasutoki took the Daikoji Castle in the central area of the Tsugaru region as a base, established the Daikoji family, and ruled the Hiraga Gun.

In the previous three years of Yeondeok, Nanbu Shintoki also ordered the Kuji clan of the Kuji clan to enter Dapu Castle and establish the Oura family to dominate Nose and County. In the late fifteenth century, Nanbu Nobutoki's younger brother Nobusi became an adopted son of the Kuji clan, and the Minohe clan took the opportunity to obtain the Kuji clan's leadership.

During the Bunkame period, the Nanaoka Kitabatake clan, the lord of Nanaoka Castle in the Tsugaru region, was semi-subordinate to the Minohe clan and held control over the Tasha-gun, Ofa gun, and northern Waihama. The Nanaoka Kitabatake clan is a descendant of the Hokugawa Shogun, Mutsu Mamoru Kitabatake, during the Northern and Southern Dynasties, and is revered as the "Nangaoka Imperial Palace". The Nanaoka Kitabatake clan, backed by the Minohe clan, replaced the Shimokuni Ando clan as the legitimate authority over the Tsugaru region, and at the same time retained considerable influence over Ezo in the north.

The ruling system deployed by the Minohe clan in the southern part of the Tsugaru region was mainly through the hereditary "gundai" of the sons of the concubines and clans, which was also the system of domination of the southern clan in the Tsugaru region from the late 15th century to the early 16th century, and can also be seen as the beginning of the Hokuritsu Sengoku period.

In addition to the chaff county, the neighboring counties of Antler, Iwate, and Kani are also three large prefectures, but there is no power that can dominate the entire prefecture, and it is basically divided by some small lords from the land. The Antlers Prefecture was mainly controlled by the Naganiu clan, the lord of Naganiu Castle, a clan in the south, and the local forces known as the "Antlers" such as the Oyu clan and the Osato, and the Shimokuni Ando clan, who returned to Dewa from Ezo, also infiltrated the area. Iwate Prefecture was mainly divided between the Fukushi clan of the Minohe clan at the southern end of the county, the Kawamura clan and the Abe clan in the west of the county, and the Kudo clan in the east of the gun, while the neighboring county of Spo Gun, a famous family from the Oshu Osaki clan, also occupied a part of the territory. In the first year of Bunkame, the county was ruled by a clan sent to this place by the southern Shintoki, and it was called the Sentoku clan because it was based on Sentoku Castle in the center of the county. In addition, there are also local forces such as the Tasuo clan, the Komoto clan, and the Funakoshi clan, which are collectively known as the "closed Yi people". It can be seen that the control of the three clans of the Kabube clan over the adjacent three counties was mainly achieved by the hereditary generals of the clan such as the Ichido clan and the hereditary generals of the lineage retainers, and the small-scale local leaders became "zhong". In the southern part of Iwate Prefecture, there are four other counties: Spo, Barnyard Kan, Waga, and Tono, and most of the rulers of these prefectures have developed from the Kamakura period onwards. As mentioned earlier, Spo is under the control of the Spo clan, a fellow of the Oshu Osaki clan, which is revered as the "Spo Imperial Palace"; The barnyard and Waga clans were governed by the barnyard clan and the Waga clan, which were respectively named after the prefecture, both of which were descended from the Nakajo clan; Tono-gun is governed by the Azenuma clan from Fujiwara Hidego.

These Northern Ao lords, represented by the Southern Clan, called themselves "dangjun", and the other party's territory was called "Guijun", "Imperial County", or "Other County". The ruler of the branch domain within the territory is called the "county lord", which is equivalent to a small lord who maintains a certain degree of independence. In the early 16th century, the lords of the four prefectures of Spo, Barnyard Kan, Waga, and Tono formed a union of lords through marriage, and the Barnyard clan also won the favor of the three generals of the Muromachi shogunate, Ashikaga Yoshinori, Yoshiharu, and Yoshiteru. As a member of the Oshu Osaki clan, the Spo clan helped strengthen the Muromachi shogunate, the Oshu Osaki clan, which was the dominant order of the Muromachi era.

After Nanbu Shintoki, the young Nanbu Masaysu inherited the throne due to the early death of Nobuyoshi, the son of Nanbu Shintoki, the head of the Minohe clan, and Nanbu Shintoki, who lived in seclusion in Tianzi Castle in the North Gate area, once again went out of the mountains to become the descendant of his grandson Masayasu to help him maintain the stability of the realm. Wengui was three years old, and the southern letter died; In the fourth year of Eisho, Nanbu Masayasu also died, and his eldest son, Nanbu Yasanbu, succeeded to the throne of the Minohe clan. In the fifth year of Daiei, all the domains of the Minohe clan, including the Kuranbe gun, were called "Oshu Nanbu Temple Gochiyuki", which further strengthened the dominance of the Minohe clan as the general leader of the southern clan.

However, in the Astronomical Period, the system of territorial domination through the castle and the "people" established during the Southern Shintoki period was increasingly shaken. In June of the 8th year of Astronomy, the castle of the Minohe clan was set on fire by Akanuma Bichu, a retainer who had a grudge against the lord (according to the "Yukiyo Private Chronicle", Akanuma Bichu was dissatisfied with the fact that the lord Nanbu Harumasa brought his wife and daughter into the city, and at the same time had a conflict with the old family Okuse Yasuki Mamoru due to the problem of knowledge and action, so Akanuma Bichu set fire to the castle and killed Okuse Yasuru Mamoru, and was later chased and beheaded by the family of Shito Mi in the process of fleeing), causing instability in the Mitsunohe clan's family; The following month, Nanbu Yasumasa, the son-in-law of Nanbu Anshin, followed the envoy group sent by Oshu Detective Osaki Yoshinao, and was given the partiality of Shogun Ashikaga Yoshiharu and changed his name to Nanbu Harusasa, in order to use the general's authority to settle the family.

During this period when the control of the Minohe clan was not very stable, the one who assisted Anshin in the southern part of the stability was Takanobu, the younger brother of Anshin, who was called the Tako family because he was the main city. In the second year of Tenmon, after pacifying the Tsugaru region, Takanshin took Ishikawa Castle in Hiraga County as his residence and became the head of Tsugaru County. In the third year of Astronomy, a rebellion broke out in the Closed Gun and was pacified by Kuji Nobuyoshi and Sakuraba Mitsuyasu, a retainer of the Mido clan. In the construction of the Hessen Shrine in Koui Prefecture in the Astronomical 10th Year (a plaque that records information and the process of building construction, called a cave), it is recorded that the Great Tanna (a person who provided alms to temples and shrines or helped in the construction of them) was named "Nanbu Right Ma Yoyasushin" and "Tongzaemon Governor Takanshin", while the Danna (basically the same in nature), the Tasuo clan, and the Ogasawara clan were its subordinates.

At the end of the 15th century, the Spo Imperial Palace of Spo Prefecture coveted Iwate Prefecture by placing the Shoko Kanshu and the Senyi in the "Shizukuishi Imperial Palace" in the western part of Iwate Prefecture, and the "Pig Go Imperial Palace" in the northern part of Iwate Prefecture. In order to cope with the plot of the Spo clan, Ishikawa Takanobu (i.e., Tako Takanshin, at this time with Tako Castle as the residence city, called Tako Takanobu) placed his retainer Fukushi clan in Iwate County Bulai Castle on the border with Spo Domain, and married the daughter of Ichikai Yasumasa of the northern Iwate Prefecture as a side room. In the 9th year of Tenmon, Ishikawa Takanobu first defeated the Tozawa clan, which had maintained part of the territory in the Djishi area in western Iwate Prefecture, and drove them to the Senbei region of the neighboring country of Dewa, and then there was friction between him and the son of Spo Tsuka, who was the head of the Spo clan at the time. In the twelfth year of Tenmon, Ishikawa Takanobu fought with Kanzane, the son of Spo Jingquan, and finally reached a rapprochement under the mediation of the Barnyard Hui family, and the southern clan gradually regained control of Iwate Prefecture. In addition, between the 11th and 12th years of Astronomical, the Southern Army also entered the territory of the Shimokuni Ando clan in Dewa and fought against it.

At the same time as the expansion of the outside world, the southern Harumasa also inherited the position of the head of the Sanhe Nanbu clan from the southern Anshin, and because the Honjo Seiju Temple was burned down in the eighth year of Astronomy, Harumasa moved the castle to Sanhe Castle.

At the end of the fifteenth century, the retainers of the Minohe clan were roughly divided into "relatives", "sons", "elders", "imperial people", "outsiders", etc.; The retainers of the eight clans in the astronomical years were "one family", "relatives", "five old people in the imperial house", "small imperial interior", "outer sample", "middle, etc."; The retainers of the other family of the nine families also have "relatives", "inner people" and so on. By roughly the same means of formation, they formed their respective retainers.

In the early part of the Astronomical Period, Nanbu Anshin placed his younger brother Nobubo and Nobuji respectively in the west side of Tianzi Castle in Ishigui Castle and Momanai Castle in Antler County, and established the Ishigui family and the Maomanai family as Miao characters, and together with the Tianzi family, they carried out the task of attacking and guarding the Izuha Ando Domain. In addition, the first brother Nagayoshi was placed in the Oshu Street of the key Chong Goho Reshin Water Castle, and the Nanjia was established as a barrier to the north of the Sanhe Castle. In addition, the Minohe clan formed the main body of their retainers by creating a powerful clan of the Hokoko family, and used it as the backbone of the confrontation with the surrounding forces such as the Spo clan and the Ando clan to quell unrest in the domain, which was also the opportunity for the Minohe clan to transform from a member of the Ichikoku to a Sengoku daimyo. But everything has two sides, such as in the second year of Hongzhi, there was a dispute between the Nan family and another "relative" North family over Douhe Village. It can be seen that while establishing a powerful concubine family, how to solve the disputes within the family and better control the concubine family has become a troublesome topic.

In addition, the lords of these clans, who have a household as their territorial unit in the province of Karanbe, have their own retainers with the "household" as their independent leader, and the large area of the heran county makes the lords of these "households" even comparable to the local lords of other countries who have a county. The "kinship" group formed by the lords of these "households" is called "Yijia", and although the Minohe clan is elected as their "family governor", the Minohe clan cannot directly regard them as vassals, but is just a combination of lords who rely on some kind of contract to assemble together.

During the Astronomical period of the early 16th century, the powerful clans of the Southern clan, the Kita, Higashi, and Nan clans, as well as the Ishikawa Takanobu Nobunao father and son, and Kunohe Masashi, gradually replaced the Ichinohe clan and the Kuji clan as the main forces attacking Antler and Iwate Counties. Ishikawa Takanobu led his Iwate people to invade the two prefectures repeatedly, and Takanobu's sister-in-law, Nanbu Nobunao (that is, the twenty-sixth lord of the southern clan, Ishikawa Takanobu's son-in-law. At this time, he was called Tako Nobunao) married the eldest daughter of the southern Harumasa in the eighth year of Eiroku, and because Harimasa had no sons at the time, he designated Nobunao as the heir of the Minohe clan and sent troops to Antler County as the generation of the southern Harimasa; At the end of the 15th century, the then ruler of the Kunohe clan moved the castle to Kudohe Castle and adopted it as a subordinate by marrying his daughter to the Kuji clan.

During the rise of the power of the Tako clan (i.e., the Ishikawa clan) and the Kunohe clan, the Ichito clan and the Kuji clan declined day by day. In addition, the lord of Nechi Castle, the Hachinohe clan, died successively in the early three generations of the Astronomical Period, Yoshitsugi, and Katsuyoshi, and because Katsuyoshi had no children, he succeeded the five-year-old Hikojiro (young name Hisamatsu, later Hachinohe Masaei) from the Nitta clan to inherit the throne, and his grandfather Nitta Morimasa served as the successor, but the other clan, Tanaka Sosuke, rebelled in order to usurp the throne and was suppressed. In the twenty-first year of astronomy, seven households Qingyin invaded eight households; In the 7th year of Eiroku, the 10th year of Eiroku, and the 12th year of Eiroku, the Kushiki clan of the four households invaded the Hachinohe clan many times, which can be described as internal and external troubles, resulting in a serious decline in the power of the Hachiho clan. Since the Shichinohe and Shichinohe clans did not marry the Sanhe clan and were unable to expand their power through foreign wars, they could only expand within the Kuranbe Prefecture. From the point of view of Nanbu Haruma, the head of the Sanhe clan, who is the governor of the "households", the above disputes are just private battles caused by territorial disputes within the "family", and he cannot deal with them without authorization, so he orders one side to stop fighting. In August of the 10th year of Eiroku, Hikojiro's own father, Nitta, died, and the following month, Hikojiro was given the partiality of the southern Harimasa, and was named Hachinohe Masaei, which can be said to have been temporarily subordinate to the Minohe clan in exchange for the survival of the family.

In the Yonglu period, the dispute in the Northern Olympics further intensified. In the first year of Eiroku, he began to win over the Oyu clan and the Osatoshi clan under the southern clan, as well as the Nankan Kitabatake clan of the Tsugaru Hiraga clan and the Nanaoka Hokahata clan through his subordinate Kunizu, the lord of Binei-gun, Asari Noriyu, as well as the Nanbu clan, the Dai-Daikoji clan of Tsugaru Hiraga Prefecture and the Nanaoka Kitabatake clan of the Nangu-gun Imperial Palace. After thorough preparations, in the ninth year of Eiroku, Aiki Ando invaded Antler-gun with a total of 5,000 men, including the Asa Ri clan, the Oysaki clan of Ezo, and the Yurizo clan of Dewa. The head of the Minohe clan, Nanbu Harumasa, hurriedly dispatched the Iwate clan and the northern, eastern, and southern families of the powerful concubine clan to meet them, but they were defeated; The following year, after both sides paid a lot of money, Antler County was finally occupied by the Ando clan, known as the "Antler Rebellion". However, in less than two months, Nanbu Harumasa personally led a large army to recapture most of Antler County. And Anton Aiji's only gain this time is to capture the bridgehead in and out of Antler County-Doshenjing Castle.