Title: Sagami no Kami
Also known as: Matsuchiyomaru (松千代丸—childhood), Shinkurou (新九郎—nickname), 慈雲院松巌傑公 (posthumous)

Ujimasa was born in 1538 as the second son of Houjou Ujiyasu and his principle wife Zuikeiin, daughter of Imagawa Ujichika, and was older brother of Houjou Ujiteru, Houjou Ujikuni, Houjou Ujinori, Houjou Ujitada, Houjou Saburou (Uesugi Kagetora), and Houjou Ujimitsu. He became heir to the clan when his older brother Shinkurou died before reaching adulthood.

Ujimasa married Oubaiin, eldest daughter of Takeda Shingen and Sanjou-no-Kata, on the occasion of the three-way alliance between the Takeda, Imagawa, and Houjou clans in 1554. Their marriage was thought to be a happy one.

Ujimasa succeeded his father as the fourth head of the Sagami Houjou Clan in 1559 upon Ujiyasu's retirement. His first task upon becoming heir of the clan, per clan convention, was a a land survey evaluating how the Houjou lands were being used and the condition of the people serving on those lands. His relationship with his brothers was good throughout, and they were be a huge help to him in the governing of the clan.

In 1561, Uesugi Masatora (Uesugi Kenshin) of Echigo laid siege to Odawara Castle with a huge army gathered from the Kantou and south Mutsu. Under the leadership of his father Ujiyasu, Ujimasa was able to drive back the army. After the Fourth Battle of Kawanakajima, he was able to take back a large part of North Kantou from the Uesugi in concert with Shingen.

In 1568, seizing the opportunity presented by the decline of the Imagawa Clan after Imagawa Yoshimoto's death at Oda Nobunaga's hand, Takeda Shingen invaded Suruga, laying siege to Yoshimoto's heir, Imagawa Ujizane in Kakegawa Castle. Ujimasa led the Houjou forces to repel the Takeda army and formed an alliance with Tokugawa Ieyasu of Mikawa in order to rescue Ujizane (his brother-in-law by way of his younger sister Hayakawadono). Ujimasa then had Ujizane adopt his son Ujinao as his heir, thus giving the Houjou Clan a legitimate claim to the territory of Suruga. In order to hold back Takeda, he formed an alliance with his old enemy Uesugi Kenshin, giving his younger brother Saburou (Uesugi Kagetora) as hostage. The severing of ties with the Takeda Clan, however, meant the dissolution of his marriage with his beloved wife Oubaiin.

In 1569, Takeda Shingen laid siege to Odawara Castle, delivering a crushing defeat to the Houjou Clan (though recent analysis by historians indicate that Shingen lost a great many men as well). In 1570, Suruga belonged almost wholly to Shingen.

In October of 1571 upon his father's death, Ujimasa broke off his alliance with Kenshin and reformed the alliance with Shingen in accordance with his father's will, after which fighting between the Houjou and Uesugi clans flared up again.

Kenshin's death in 1578 triggered a fight for succession to the Uesugi Clan between his two adopted sons, Uesugi Kagekatsu and Uesugi Kagetora (the Otate no Ran). Ujimasa was tied up at that time in a confrontation with Satake Yoshishige and Utsunomiya Kunitsuna in Shimotsuke, so sent his brother Houjou Ujikuni to their brother's aid in his place while asking Takeda Katsuyori for reinforcements. Katsuyori betrayed the Houjou and formed an alliance with Uesugi Kagekatsu, and the Otate no Ran ended with Kagetora's death and Kagekatsu's succession.

Ujimasa broke off the alliance with the Takeda clan a second time and formed an alliance with Oda Nobunaga and Tokugawa Ieyasu to attack the Takeda territory in a pincer movement, but shifting alliances and hard fighting left the conclusion unclear. In 1580 Ujimasa proposed to Oda Nobunaga, who had just taken Ishiyama Hongan Temple, that the Houjou Clan become a vassal of the Oda Clan, but Takeda Katsuyori managed to form an alliance with Oda first. Ujimasa retired from the position of clan head in the same year, but like his father before him still held onto the government and military affairs of the clan.

In the following years, the Houjou Clan managed to gain control over a vast territory: Sagami, Izu, Musashi, Shimousa, Kazusa, Hitara, Shimotsuke, and a part of Suruga. Interestingly, however, Ujimasa did not seem to hold the ambition of ruling the entire country, a tradition passed down from the founder of the Late Houjou Clan, Houjou Souun. Instead, Ujimasa concentrated on independence for the 8 Kantou provinces under Houjou rule and alliances with other strong warlords such as Tokugawa Ieyasu and Date Masamune.

In 1589, using Ujimasa's refusal to proceed to the capital to attend him as pretext, Toyotomi Hideyoshi gathered an army of 220,000 to lay siege to Odawara Castle. It overran castles in the Houjou territory in quick succession. The siege against Odawara Castle lasted from May to August. On August 4, Ujimasa offered to surrender his life for the lives of his men. Toyotomi demanded the lives of both Ujimasa and his brother Ujiteru, as well as the lives of their vassals Matsuda Norihide and Daidouji Masashige. Ujimasa and Ujiteru committed seppuku on August 10.

Ujimasa left behind the following tanka verses for his death poem:

「雨雲の　おほえる月も　胸の霧も　はらいにけりな　秋の夕風」
「我身今　消ゆとやいかに　おもふへき　空よりきたり　空に帰れば」

translated (Sadler 1978, pp. 160–161):

Autumn wind of eve,
blow away the clouds that mass
over the moon's pure light
and the mists that cloud our mind,
do thou sweep away as well.

Now we disappear,
well, what must we think of it?
From the sky we came.
Now we may go back again.
That's at least one point of view.

There is another verse which is sometimes attributed to his brother Ujiteru, but is most often attributed to Ujimasa:

「吹くと吹く　風な恨みそ　花の春　もみじの残る　秋あればこそ」

which may be translated:

The wind's resentment—
Oh, see how it blows against
The flowering spring.
Yet it will leave us anon
The bright colors of autumn.

Also known as: Hachigamine-jou

Kasugayama Castle was Uesugi Kenshin's primary fortress, located in present-day Niigata Prefecture. It was built by the Nagao clan, and Kenshin became its lord in 1548 (some say Kenshin built the castle). Uesugi Kagekatsu won control of the castle in the Otate no Ran after his adopted father's death.

A prefectural high school located in Matsumoto, attended by Ougi Miya and her friend Kitahara Madoka. Its policy forbids students from getting part-time jobs unless given express permission.

Lit. "female bird feather river"; a river that runs through Matsumoto City.

Also known as: Naoe Kagetsuna (直江景綱), Naoe Masatsuna (直江政綱)
Title: Yamato no Kami (大和守)

Historically: A trust-worthy and courageous vassal of Uesugi Kenshin who served as one of his military commanders. Also served Kenshin's father (Nagao Tamekage) and older brother (Nagao Harukage) and was an excellent adminstrator. Adopted Naoe Nobutsuna when he married Sanetuna's daughter Osen-no-Kata, since he had no sons of his own.

Lit.: "War of the Castle". The Otate no Ran was the name given to the intra-clan war fought between Uesugi Kagekatsu and Uesugi Kagetora, both adopted sons of Uesugi Kenshin, for succession to the position of head of the Uesugi Clan after Kenshin died. The war bifurcated the Uesugi commanders and in the end significantly weakened Uesugi's power. The "Otate", or "Castle/Mansion" refers to the residence Uesugi Kenshin built for the Kantou Kanrei, Uesugi Norimasa, near Kasugayama Castle. He used it as a government office after Norimasa passed on the title to him and the lands around Kasugayama Castle were developed.

On March 9th in the 6th year of Tenshou (April 15th, 1578), Uesugi Kenshin collapsed at Kasugayama Castle's privy from an "unforeseen nervous weakness" (some speculate poison or assassination) and died on the 13th (April 19th, 1578) without ever regaining consciousness.

Traditionally, it is held that he died without ever deciding on an heir. Some point to evidence such as Uesugi Kagetora accompanying him on shrine visits at the New Year and not being forced to perform military service (though proof of the latter is sketchy), to support theories that Kenshin favored Kagetora. It is evident that Kagetora, who was adopted from the mighty Houjou Clan, ruler of the Kantou, had unshakeable standing within the Uesugi Clan even after the Echigo-Sagami Alliance fell apart in 1571.

On the other hand, Kenshin had conferred the highest military powers within the Uesugi family on Kagekatsu, and the Uesugi retainers used similar titles for Kenshin and Kagekatsu.

Pointing to some of the above reasons, many historians argue that Kenshin had intended to pass the title of Kantou Kanrei and position of clan head of the Sannai-Uesugi Clan to Kagetora while making Kagekatsu the master of Echigo and the head of the Echigo-Uesugi Clan. There is no way of telling based on current evidence which would have been the sole heir.

In any case, a dispute over the rightful heir to Kenshin arose between Kagekatsu and Kagetora immediately. Kagekatsu moved first. On the day following Kenshin's death, Kakizaki Haruie, viewed as being in the Kagetora faction, was assassinated (there is another theory that Haruie was killed before the Otate no Ran, when his father was accused of treason). Also, according to one primary historical record, Kagekatsu moved quickly to occupy the inner citadel, treasury, and armory of Kasugayama Castle, though the exact date is unknown. Kagekatsu proclaimed himself the rightful heir in a letter dated March 24th (April 30th) and began attacking Kagetora, barricaded in the Third Wing.

Kagekatsu and Kagetora's forces fought in what is now Jouetsu City on May 5th (June 10th, 1578), and until Kagetora evacuated in the middle of the month, hostilities continued within Kasugayama Castle. During that time, both Kagekatsu and Kagetora tried to win the various Echigo generals to their side.

Commanders committed to Kagekatsu:
- Amakasu Kagemochi: Oumi no Kami
- Higuchi Kanetoyo, Naoe Kanetsugu, Ookuni Saneyori
- Honjou Shigenaga: Echizen no Kami
- Irobe Nagazane: Son of Irobe Katsunaga, master of Hirabayashi Castle
- Joujou Masashige: one of Kenshin's adopted sons, Kagekatsu's brother-in-law, head of the Joujou-Uesugi family
- Kakizaki Noriie: Noto no Kami
- Kanou Hideharu
- Kawada Nagachika: Buzen no Kami
- Murakami Kunikiyo: head of the Yamaura-Uesugi family
- Naoe Nobutsuna: Yamato no Kami, master of Yoita Castle
- Ooishi Tsunamoto: Harima no Kami
- Saitou Tomonobu: Shimotsuke no Kami, master of Akada Castle
- Shibata Nagaatsu, Shibata Shigeie, Ijimino Nobumune
- Suda Mitsuchika
- Yamayoshi Kagenaga: head of the Yamayoshi Clan, master of Koba Castle
- Yasuda Akimoto: head of the Echigo-Yasuda Clan, master of Iiyama Castle
- Yasuda Nagahide: master of Yasuda Castle
- Yoshie Munenobu, Yoshie Kagesuke, Nakajou Kageyasu

Commanders committed to Kagetora:
- Ashina Moritaka: head of the Ashina Clan
- Ayukawa Morinaga: master of Oobasawa Castle
- Daihouji Yoshiuji: head of the Dewa Daihouji Clan
- Horie Munechika (who later betrayed him): Suruga no Kami, master of Samegao Castle
- Honjou Hidetsuna: master of Numata Castle
- Honjou Saneyori
- Houjou Ujimasa, Houjou Ujiteru, Houjou Ujikuni: Kagetora's elder brothers, head and generals of the Houjou Clan
- Kaji Hidetsuna: nephew of Uesugi Kenshin, master of Kaji Castle
- Kanamari Chikatsuna: master of Sanjou Castle
- Kawada Shigechika: Houki no Kami
- Kitajou Takahiro, Kitajou Kagehiro
- Kurokawa Kiyozane: master of Kurokawa Castle
- Nagao Kagenao
- Sanbonji Sadanaga: head of the Sanbonji-Uesugi Clan, master of Fudouzan Castle, Iyo no Kami
- Shimodaira Shurinosuke: master of Jouhukuji Castle
- Takeda Katsuyori (who was later bribed by Kagekatsu and entered into an alliance with him): head of the Takeda Clan
- Uesugi Norimasa: Kenshin's adopted father, former Kantou Kanrei
- Uesugi Kagenobu: originally Nagao, head of the Koshin-Nagao family
- Uesugi Norishige: son of Uesugi Norimasa

On May 13th (June 18th), with the lines between the commanders drawn, Kagetora finally retreated from the Third Wing to the Otate and requested aid from his brother Houjou Ujimasa while ordering his troops to set fire to the lands around Kasugayama Castle. He attacked Kasugayama Castle with around 6000 troops on May 17th (June 22nd), but was repelled.

He regrouped and attacked again on the 22nd (June 27th) with the same result. Around this time, hostilities between Kagekatsu and Kagetora's forces also began within the broader region. In Kouzuke, Kitajou Takahiro and Kitajou Kagehiro (father and son) sent forth troops with their aim on Kunohe Castle. Kagekatsu had no troops to spare at this point, and Kagetora's side easily took several castles in Miyano and Ogawa. Kagetora's side had completed organization for drawing Houjou troops into Echigo at this point, but since the distance was great, the Houjou requested assistance from their ally Takeda Katsuyori. Katsuyori sent an advance guard of 20,000 under the command of Takeda Nobutoyo, which arrived at the Echigo-Shinshuu border on May 29th (July 4th).

Aside from the Houjou and Takeda, Kagetora also received assistance from Ashina Moritaka. However, Moritaka met dogged resistance from Kagekatsu's forces and was stopped in his tracks. Still, Kagetora held the advantage at this point. The only problem: Ujimasa had little interest in moving to the offensive.

Kagekatsu, at a disadvantage now that he was being attacked from three directions, took a big gamble. He sent an advance guard to Katsuyori's camp offering a large amount of money and Kouzuke's rice fields in exchange for a Kagekatsu-Takeda alliance. How Kagekatsu knew that Katsuyori was painfully short on funds after his ignominious defeat at the Battle of Nagashino to Oda Nobunaga and Tokugawa Ieyasu is unknown. Katsuyori arrived at Kaidu Castle and conferred with Nobutoyo. He entered into an alliance with Kagekatsu on June 12th (July 16th).

Now that Kagekatsu's side had successfully bought Takeda, they no longer needed to watch their backs. On the day the alliance was made Kagekatsu took Noumine Castle, allowing him to communicate with Sakato Castle from Kasugayama Castle. On the following day, Kagetora's side lost Uesugi Kagenobu, and their situation worsened day by day. Kagekatsu pressed towards various castles held by Kagetora's forces in Ecchuu. Katsuyori continued peace negotiations with Kagekatsu at full tilt; they were concluded on June 29th (August 2nd), and he withdrew his troops on August 28th (September 29th).

In the following month, Ujimasa finally began moving in earnest. Houjou Ujiteru and Houjou Ujikuni set out for Echigo by Ujimasa's command. They crossed Mikuni Pass and took Kabasawa Castle, within striking distance of Sakato Castle. However, the castle was well-guarded by Kagekatsu's forces, and with the onset of winter the Houjou forces could not advance to Kasugayama.

Finally, with Ujikuni and Takahiro left behind to guard Kabasawa Castle and Kagehiro acting as rear guard, they retreated. The Takeda forces, withdrawing from the lands around Kasugayama Castle, loitered between Kasugayama/Otate and Sakato Castle, in the end acting as a deterrent against Kagetora and Houjou forces. At the end of the year (January in the Gregorian calendar) Kagekatsu married Katsuyori's younger sister.

Having skillfully removed external threats and gathered support within the clan, Kagekatsu decided that the internal war would be resolved before the snow thawed. On the other hand, Kagetora was losing both supporters and castles. On February 2nd (February 27, 1579) Kagekatsu ordered a general offensive against Kagetora at Otate. Kagehiro was killed.

Kagekatsu recaptured Kabasawa Castle from the Houjou. Kagetora escaped from Otate and, with no hope of relief from the Houjou, who were blocked off by snow, sent his eldest son along with Kenshin's adopted father Uesugi Norimasa to negotiate for peace. On the way to Kagekatsu's camp, they were surrounded by Kagekatsu's troops and killed (there are accounts that the order actually came from Kasugayama Castle). On his flight from Otate towards the Kantou, Kagetora stopped at Samegao Castle. There he was betrayed by its master, Horie Munechika, and committed suicide along with his family on March 24th (April 19th, 1579).

Though Kagekatsu won the internal war, he would continue to face resistance from Honjou Hidetsuna, Kanamari Chikatsuna and others, and would not have total control of the clan until a year later.

The Otate no Ran would become one of the underlying reasons for the destruction of the Takeda Clan and the drastic decline of the Uesugi Clan's power.

<small>Note: Japanese dates given in this entry are based on the lunar calendar; Gregorian Calendar dates in () were calculated using <a href="http://www.uni-tuebingen.de/geschichte-japans/nengo_calc.htm">NengoCalc</a>.</small>

Also known as: Realm Divide

The Battle of Sekigahara was fought on October 21, 1600 between the forces of those loyal to Toyotomi Hideyoshi's young son and heir, Toyotomi Hideyori (forces of the West) and Tokugawa Ieyasu (forces of the East). The battle took place in Sekigahara in modern Gifu Prefecture and was the decisive battle which led to Tokugawa taking control of all Japan.

Also known as: Shindai (信大)

Shinshuu University is a Japanese national university located in Nagano Prefecture with five campuses, one of which is located in Matsumoto City. It was founded in 1949. The Arts and Humanities, Medicine, and Science departments are located in Matsumoto.

Titles: Mikawa no Kami

A vassal of Uesugi Kenshin who fought in the Battle of Kawanakajima in 1561. He was commended for his bravery when he continued fighting even after losing both his horse and his armor. He supported Uesugi Kagekatsu in the Otate no Ran. Later, he committed suicide in the Battle of Uozu Castle along with twelve other Uesugi commanders.

Also called: Hiyoshimaru (日吉丸), Kinoshita Tokichiro (木下藤吉郎), Hashiba Hideyoshi (羽柴秀吉)
Titles: Kanpaku, Taikou, Chikuzen no Kami

Historically: The second of the "Three Unifiers"; he was born a peasant but rose quickly through the ranks of Oda Nobunaga's vassals to the position of one of Nobunaga's most distinguished generals. After Nobunaga's death, he took over the work of unifying the nation through military strength and brought an end to the Sengoku period.

Also called: Nagao Kagetora (長尾景虎), Uesugi Masatora (上杉政虎), Uesugi Terutora (上杉輝虎)
Title: Kantou Kanrei (関東管領)

Historically: Fourth son of the noted warrior Nagao Tamekage, Kenshin wrested control of the Nagao clan from his brother Nagao Harukage and fought for control of Echigo Province. He accepted the name Uesugi Masatora when he gave refuge to his nominal lord, Uesugi Norimasa, and at his urging campaigned to push the Houjou out of the Kantou Region.

He adopted the name "Kenshin" when he became a Buddhist monk and a devotee of Bishamonten. The standard his army carried onto the battlefield bore the character 毘 ("bi") for Eight-Sword Bishamonten. He battled Takeda Shingen five times at Kawanakajima, as well as the Houjou and Ashina clans and Oda Nobunaga, whom he defeated despited being outnumbered. However, Kenshin died soon after the battle. He named his two adopted sons, Uesugi Kagetora and Uesugi Kagekatsu, his heirs, hoping that they would divide the Uesugi lands peacefully between them after his death.

In Mirage of Blaze: He became a god of war after his death, ascending from Nin Dou to Ten Dou, and established the Meikai Uesugi Army to ensure that the peace of Japan is not disrupted by the onshou. He named Kagetora as its commander.