70.Okayama Castle Part1 (draft)

Location and History

Introduction

Okayama Castle was still located in Okayama City which is the prefectural capital of Okayama Prefecture. Its main tower was nicknamed as “Ujo” which means “Crow Castle” because of its black colored walls. Although the original main tower was unfortunately burned down by the Okayama Great Air Raid on the 29th of June in 1945, it was apparently fully restored in 1966. There is the Okayama Korakuen Garden across the river from the castle, which is called one of Japan’s three most beautiful gardens. Therefore, the area around is a very popular tourist spot. The area was created not for a short time but for a long time between three different lord families. They are the Ukita Clan which built the castle, the Kobayakawa Clan which modernized it, and finally the Ikeda Clan which completed it. As a result, the castle became the origin of the city. This article will explain its story from the beginning to its completion.

The current main tower of Okayama Castle

Was Naoie Ukita an Accomplished Villain?

Naoie Ukita became a great warlord around the current Okayama Prefecture in his life during the Sengoku Period. However, he wored so hard to achieve this that he has been labeled “an accomplished villain” or “One of the three great villains” in the period (the other two were Dosan Saito and Hisahide Matsunaga”). The bad reputation started from the first Edo Period. Hoan Oze, a writer at that time, described it in his “Hoan Taikoki” which is a popular biography of Hideyoshi Toyotomi. He wrote as followed:

“A person, who has a good talent, but uses it for his own benefit against justice, would eventually destroy himself.”

He mentioned Naoie in the example above. Hoan was devoted to Confucianism, therefore, he seemed to look back at the Sengoku Period to make a consequence theory. As a reality, most warlords were also something like Naoie which Hoan wrote, but as a result, most people during the peaceful Edo Period accepted Hoan’s theory. The three villain’s family’s power declined then because of financial reasons; therefore, they lost the ability to complain about it.

The restored wooden statue of Naoie Ukita, exhibited by Okayama Castle

The theory was accelerated by the Bizen Gunki, a war chronicle which was written during the late Edo Period. This book is one of the few remaining records which say Naoie’s early days as followed:

“Naoie and his family were attacked by an enemy but managed to escape from their castle and wandered when he was only a little child. After he grew up, he served the Uragami Clan and avenged the enemy. He also got promoted because of his talent. However, he worked hard for this. For example, he even killed his relatives even they were his son-in-laws. He used any means necessary such as tricks, assassinations and the use of poison. He eventually defeated his master to become a great warlord.”

The book makes us believe that Noaie was really an accomplished villain. However, recent studies are confirming these descriptions one by one. So far, some of them are false (for example, one of the murders was not actually committed by Naoie). The work is incomplete and vague. If more evidence comes out in the future, Naoie might actually be seen as a hero rather than a villain. Even though many of the descriptions are confirmed, they may have been common ways for warlords to survive. In addition, the hierarchical system was very chaotic and unstable during the Sengoku Period. It was often revised and changed because of the power struggle that often plagued the Senoku Period, unlike the peaceful Edo Period.

Naoie’s last home was Okayama which was near the Seto Inland Sea to the south at that time. The location was good for land and water transportation. It was on the delta of estuary of Asahigawa River which flowed into the sea. The delta had three hills, one of which was called Ishiyama (which means stone mountain), where Naoie built the main enclosure of the castle. Another one was called Okayama, which was the origin of the castle and the current city’s name. The scale of the castle was still small. However, Naoie expected that the castle and town would eventually prosper.

The imaginary map around the Okayama area before the Edo Period, exhibited by Okayama Castle
The range of Okayama Castle during Naoie’s period, exhibited by Okayama Castle

After Naoie became a great warlord, his actions were recorded multiple times. However, the records say Naoie was worried about his last decision. In the late 1570’s, the Oda Clan and the Mori Clan battled each other over the Chugoku Region including Naoie’s territories. He was on the Mori’s side and fought against the Oda Clan. At first the Mori Clan was more superior than the Oda Clan which eventually changed. Naoie seemed to continue watching this trend while keeping a cool head. He finally decided to switch over from the Mori to the Oda in 1579 through the agency of Hideyoshi Hashiba who was a senior vassal of the Oda Clan. That meant Naoie would become the frontline against the Mori Clan. Severe battles continued for a while. Naoie unfortunately got sick and eventually died around January in 1582 (according to the lunar calendar). Hideyoshi wanted to expand his empire. He entered Okayama Castle in April and battled against the Mori Clan at Bicchu-Takamatsu Castle in May before the Honnnoji Incident happened in June, which resulted in him being the next ruler. As a result, Naoie’s decision was correct.

The portrait of Nobunaga Oda, attributed to Soshu Kano, owned by Chokoji Temple, in the late 16th century (licensed under Public Domain via Wikimedia Commons)
The portrait of Terumoto Mori, owned by the Mori Museum (licensed under Public Domain via Wikimedia Commons)
The ruins of Bicchu-Takamatsu Castle

Hideie Ukita, a young nobleman of the Toyotomi Government, develops the Castle

Hideie Ukita followed his father, Naoie when he was only 11 years old but was supported by his relatives. The Ukita Clan joined the unification of Japan by Hideyoshi Toyotomi (who changed his name from Hashiba). Hideie was eventually promoted by Hideyoshi finally as a member of the council of the 5 elders. He was the youngest member in the council (at only 27 years old) while the others were all over 40. Historians speculate that there are 4 reasons for his early promotion.

The portrait of Hideie Ukita, owned by Okayama Castle (licensed under Public Domain via Wikimedia Commons)
  1. Hideyoshi felt an obligation for the contributions of the Ukita Clan
    The clan joined Hideyoshi’s troops during the most important period of his unification of Japan.
  1. The affection from Hideyoshi to Go-hime, Hideie’s wife
    Go-hime was a daughter of Toshiie Maeda, who was adopted to Hideyoshi when she was a baby. Hideyoshi loved her very much because he didn’t have children then. However, he finally got more children later on his life. Her husband was Hideie. When she suffered from a terrible sickness, Hideyoshi blamed it on the curse of the foxes. He ordered Fushimi Inari Shrine to pray for her recovery (the shrine uses foxes as envoys). He also declared that he would destroy the shrine and hunt foxes every year if she died. She fortunately recovered. Go-hime was the important connection between Hideyoshi and Hideie.
  1. The good relationship between Hideyoshi and Hideie himself
    There are no records that indicate Hideyoshi, who was a whimsical ruler, was ever angry at Hideie. Hideyoshi once announced that Hideie would be the ruler of Japan or Korea during the first stage of his invasion of Korea. (Hideyoshi himself wanted to rule China.) Hideie didn’t have his own military contributions but was often active fighting which might have been admired by Hideyoshi. He also spent huge amount of money and time for Noh plays, tea ceremonies, and falconries (using a falcon for hunting), which Hideyoshi also liked. In addition, you might think he was handsome person when you look at his portrait. However, the image above was drawn during the Showa Era using the author’s imagination.

4, Hideyoshi wanted to promote his relatives
When Hideyoshi got old, all of his male relatives were all gone excluding his only son, Hideyori. For example, the ex-successor, Hidetsugu was forced to kill himself by performing Harakiri. Hideyoshi’s brother, Hidenaga died because of illness. Hideie might have been considered one of his few relatives who would support Hideyori in the future.

The Portrait of Hideyoshi Toyotomi, attributed to Mitsunobu Kano, owned by Kodaiji Temple (licensed under Public Domain via Wikimedia Commons)

Hideie was also a great lord who several territories with about 500,000 Koku of rice. Okayama Castle was renovated as his home. It was said that the construction was done between 1590 and 1597. The center of the castle was moved from the Ishiyama hill to the Okayama hill to the east. The new center (the main enclosure) was surrounded by high stone walls which was over 15m high. They were built piling up natural stones, which was called the Nozura-zumi method. Asahigawa River had been diverted into several flowing rivers around the castle but was converged as a natural moat in the north and east of it. Many other enclosures were also built in the southern and western parts of the castle, which were surrounded by artificial moats. The castle town was well developed. However, Hideie was so busy that he couldn’t live there for a long time. However, he sent his instructions on how to build the castle town to Japan from Korea where he was positioned during the invasion.

The transition of the scale of the castle, the second one from the left is Naoie’s period and the third one is Hideie’s period, notice the diversion of the rivers
The range of Okayama Castle during Hideie’s period, exhibited by Okayama Castle, The dark blue line represents the convered river flow that turns into one big moat
The remaining stone walls of Hideie’s period

The most interesting thing of the castle was its main tower as the symbol. It officially had 3 levels with 6 floors (however, some historians consider it 4 or 5 levels because of its complex roofs). It was over 20m high (about 35m in total including its stone wall base). The base was built along the natural terrain as the techniques were still primitive at that time. Therefore, the base became a scalene pentagon on a plane. As a result, the first floor became the same shape as the base. As you go higher, the shape turns into a square. Because of the complex floors, the first and second levels looks like multiple turrets and the top level like a lookout point was on them. This style is called “Boro-gata” (means the lookout type). The main tower of Okayama Castle is said to have followed the style of Nobunaga Oda’s Azuchi Castle and Hideyoshi’s Osaka Castle. The walls of the tower were painted black, which originated from the nickname of the castle, “Ujo” (means Crow Castle). In addition, the castle was decorated by rooftiles using gold leaves, which needed special permission from Hideyoshi to be used.

The old photo of the original main tower (licensed under Public Domain via Wikimedia Commons), Unfortunately because the picture is in black and white, it’s hard to tell that the walls were indeed in the color of black
The miniature model of the main tower, exhibited by Okayama Castle, The minature model has a slight difference in design compared to the modern look of the castle today
The excavated or restored rooftiles using gold leaves, exhibited by Okayama Castle, the round family crest is Toyotomi Hideyoshi’s family

However, after Hideyoshi died in 1598, the situation changed dramatically. The authority of Hideie, which had been back upped by Hideyoshi, began to deteriorate. That caused an imbalance in power, which is often called Ukita Trouble. Some senior vassals, such as Ukita Sakyonosuke, and Hideie’s close vassals like Jirobe Nakamura fought against each other about who would rule their territories. Unfraternally, Hideie was not able to stabilize it. Eventually, many vassals left Hideie. For example, Ukita Sakyonosuke would become the lord of Tsuwano Castle. As a result, the power of Hideie would eventually disappear.

The portrait of Ukita Sakyonosuke, private owned (licensed under Public Domain via Wikimedia Commons)
The ruins of Tsuwano Castle (in Shimane Prefecture)

On the 15th of September in 1600 (according to the lunar calendar), the Battle of Sekigahara occurred, where Hideie joined the Western Allies but was unfortunately defeated. He escaped from the battlefield and hid in the mountain areas with his few retainers for a while. Then, he sailed to Satsuma Province to ask the Shimazu Clan which also joined the Western Allies for help. The clan still did not surrender to the Tokugawa Shogunate which was the former Eastern Allies. Hideie wanted to survive and get back to being a lord. After the clan and the shogunate made peace in 1603, Hideie presented himself at the shogunate the following year. The decision of the shogunate was to banish him to Hachijojima Island, nearly 300km away from Edo (the current Tokyo), forever. It was said Hideie never gave up on his comeback until his death when he was 84 years old in 1655. Hideie must have been stronger than his image of ” a young nobleman of the Toyotomi Government”.

The encampment of Hideie Ukita at the Sekigahara battlefield

Hideaki Kobayakawa, a Misfortunate Lord who Modernizes the Castle

After that, Hideaki Kobayakawa entered Okayama Castle as the lord of the Okayama Domain which earned him about 400,000 Koku of rice. This was his reward for helping Ieyasu win The Battle of Sekigaha. His actions gave him the reputaiton of a betrayer. He switched from the Western Allies to the Eastern Allies during the battle, being forced by the way of Toi-deppo (shot by Ieyasu Tokugawa). However recent studies suggest that Hideaki did not switch sides halfway through the battle but rather was supportive of the eastern allies from the very beginning. In spite of this, his bad reputation affected his relationship with the Okayama Domain. They said that Hideaki lived a luxurious life, doing bad things, and finally died a madman. As a matter of fact, he killed a senior vassal, which resulted in other senior vassals leaving him in fear of getting killed.

The portrait of Hideaki Kobayakawa, owned by Kodaiji Temple (licensed under Public Domain via Wikimedia Commons)

However, recent studies suggest that Hideaki’s death was caused by excessive alcohol drinking since his childhood. In addition, he left too many achievements for his short two years at Okayama before his death at only 21 years old. The purge to his senior vassals might have indicated his new government with his new close vassals. Some of Hideaki’s achievements include land survey, reorganization of temples, destroying unnecessary castles, and modernizing Okayama Castle (excessive castles could lead to rebellions which many lords wanted to minimize). The modernizing was done because the castle needed to adapt to new military methods after the Sekigahara battle.

Hideaki doubled the range of the castle (from 60 hectares to about 110 hectares). The outer third enclosure was built in the new western part of it. The outer moat also surrounded the enclosure, which was 2.5km long in total. It was said that the moat was built in only 20 days, which gives it its nickname “Hatsuka-bori” (which means 20 days moat). It was also said that it was fortified to prepare for the possible invasions from the Mori Clan. The clan was defeated during the Sekigahara battle and their territories were reduced by the shogunate, but Hideaki wanted to prepare for a possible revenge invasion from the west of Okayama Castle. In addition, Hideaki also extended the main enclosure and built new turrets and gates. We can see the stone walls of the enclosure, built by him, next to those of Hideie Ukita’s period. Some of the turret buildings were said to have been moved from castles which had been abandoned.

The ruins of the outer moat
The right side of these stone walls were built by Hideaki, the left side was built by The Ukita Clan
The miniature model of Onando Turret, which was one of turrets that were moved\ from other castles, exhibited by Okayama Castle

Hideaki died not having a successor. For this reason, the shogunate fired the Kobayakawa Clan. He was forced to mature at a young age, and like the wind he had an early demise. If he could have lived for few more years or have had his successor, his reputations would have been different from the current ones. He was really a misfortunate lord.

Ikeda Clan, the Pivot of Western Japan completes the Castle

Okayama Castle and the Okayama Domain was followed by Tadatsugu Ikeda when he was only 5 years old. He was a son of Terumasa Ikeda, the lord of Himeji Caste, whose wife was a daughter of Ieyasu Tokugawa. Therefore, Tadatsugu was a grandson of Ieyasu. This promotion may have been favoritism by Ieyasu. Tadatsugu was back upped by Toshitaka Ikeda (20 years old) who was another son of Terumasa, but his mother was different from Tadatsugu (Terumasa’s ex-wife). Tadatsugu died young just after he grew up, so his brother, Tadakatsu (14 years old but after his coming-of-age ceremony) followed him. Tadatsugu died when he was 31 years old and his successor (Mitsunaka) was only 3 years old back then. The shogunate decided to move Mitsunaka to Tottori Castle. Instead, Mitsumasa Ikeda, who was a son of Toshitaka, moved from Tottori to Okayama when he was 24 years old. Overall, the shogunate considered Okayama castle and the domain as an important spot in western Japan, where a young lord was not able to govern it properly.

Himeji Castle
The Portrait of Terumasa Ikeda, owned by Tottori prefectural art museum (licensed under Public Domain via Wikimedia Commons)
The Portrait of Tadatsugu Ikeda, owned by Setai-in Temple (licensed under Public Domain via Wikimedia Commons)

Okayama Castle was finally completed by the Ikeda Clan. First, Toshitaka, who was the guardian of Tatatsugu, developed the inner second enclosure and the western enclosure. The remaining Nishite Turret was built at the western enclosure at the same time. Secondly, Tadakatsu extended the main enclosure to build the government office called “Omote-shoin”. The remaining Tsukimi Turret was also built there. The castle not only become a home for battles, but it also become an office for the government.

Part of the illustration of Okayama Castle in Bizen Province, exhibited by the National Archives of Japan
The Portrait of Toshitaka Ikeda, owned by Hayashibara Museum of Art (licensed under Public Domain via Wikimedia Commons)
The remaining Nishite Turret, which is located in front of the inner moat
The Portrait of Tadakatsu Ikeda, owned by Setai-in Temple (licensed under Public Domain via Wikimedia Commons)
The miniature model of the main enclosure of Okayama Castle, exhibited by Okayama Castle
The remaining Tsukimi Turret, This turret is located on the bottom left corner of the diorama shown above

After Mitsumasa Ikeda became the lord, he improved the civil administration and cultural affairs in his domain. He learned Confucianism to lead the people in the domain. He also established the Okayama Domain School in 1669 for the Samurai-class people. He also built the Shizutani School in 1670 for the lower-class people, which was said to be the earliest school for commoners in Japan. The constructions of the schools were instructed by his excellent close vassals like Nagatada Tsuda. On the other hand, the castle town of Okayama often suffered natural disaster damages like floodings of Asahigawa River. This was because the river was artificially converged as a natural moat when the castle was renovated. As a result, the water of the river would sometimes overflow to the town during harsh weathers. Mitsumasa ordered Nagatada to prepare preliminary measures for possible natural disasters. Nagatada decided to build spillways called “Hyakkenn-gawa” (which means 180m-wide river) at the upstream of Asahigawa River which were the ideas from a Confucian, Hanzan Kumazawa. The spillways usually worked as banks, but they changed to a river when the flow of Asahigawa River overflowed.

The Portrait of Mitsumasa Ikeda, owned by Hayashibara Museum of Art (licensed under Public Domain via Wikimedia Commons)
The ruins of the Okayama Domain School
The auditorium of the Shizutani School
The explanation of Hyakkenn-gawa River, exhibited by Okayama Castle
The second bank of Hyakkenn-gawa River

Mitsumasa’s successor, Tsunamasa liked culture and entertainment very much.
After the spillways were completed, the site across Asahigawa Rivet from the castle became a wasteland. Tsunamasa launched the construction of his garden there, called Gokoen which is the current Okayama-Korakuen, one of the three great gardens of Japan. It is also instructed by Nagatada, who was like a superman! The garden was mostly consisted of fields, where farmers worked, as if a real countryside, by Mitsumasa’s interests. He commuted his own garden by a boat from the castle day by day. As time passed, the appearance of the garden was changed by his descendants. For example, most of the fields were turned into grass. Artificial hills and ponds were built on some points of the garden, which resulted in what we see in it. The garden was also used for guests and opened to the public on somedays during the later Edo Period.

The Portrait of Tsunamasa Ikeda, owned by Hayashibara Museum of Art (licensed under Public Domain via Wikimedia Commons)
The current Okayama-Korakuen
The illustration of the Gokoen garden, 1n 1863, exhibited by the Cultural Heritage Online

To be continued in “Okayama Castle Part2”

205.Matsuoyama Castle Part2

This article will describe how we visit the ruins of the encampments for the battle of Sekigahara (mainly of the Western Allies). We will finally go to the ruins of Matsuoyama Castle where Hideaki Kobayakawa was positioned.

Features

Introduction

This article will describe how we visit the ruins of the encampments for the battle of Sekigahara (mainly of the Western Allies). We will finally go to the ruins of Matsuoyama Castle where Hideaki Kobayakawa was positioned. In addition, as for the encampments of the Western Allies, we will visit them not only based on the defacto theory but also based on the new theories. Ogaki Castle may be a good starting point because the battle happened just after Mitsunari Ishida left the castle. You can see some exhibitions of him and the Sekigahara Battle in its restored main tower which has become a historical museum. Sekigahara Station is just few minutes from Ogaki Station.

The current Ogaki Castle
An example of its exhibitions inside
Sekigahara Station

Tour to Encampments of Western Allies based on Defacto Theory

It will be easy for visitors to visit the encampments based on the defacto theory because there are lots of information boards (also written in English). “Sekigahara Historical Landmark Tour” map, provided by the Sekigahara tourist association secretariat, will also help you. The following link is available in English.
(https://www.sekigahara1600.com/download/file/20200109155151.pdf)
So, let us first go to the encampment of Mitsunari Ishida on Sasaoyama Mountain, based on the defacto theory.

An example of the information boards

It may be better to go towards the Battle Site Memorial before reaching the mountain because you can find it easily. You can see the mountain where the flag of Mitsunari’s encampment stands.

The Battle Site Memorial, The flag on the right is Ieyasu’s family crest, while the flag on the left is Mitsunari’s family crest
Sasaoyama Mountain seen from the Battle Site Memorial, Notice the tiny white flags on the mountain

If you reach the foot of the mountain, you will eventually see that it was the encampment of Shima Sakon who was Mitsunari’s senior vassal. In fact, there is no evidence which proves that the mountain was certainly their encampments. The current historical sites were designated by the officials during the Meiji Era, probably based on the local traditions of the Edo Period. However, the top of the mountain looks suitable for the stronghold. You can see a panoramic view from the top, including Nangusan Mountain on the left, where Hiroie Kikkawa was positioned, and Matsuoyama Mountain on the right, where Hideaki was positioned. If Mitsunari would have been on the top, he would have been able to see any suspicious actions by the lord.

The encampment of Shima Sakon
The entrance to Mitsnari’s encampment
The stone monument of Mitsnari’s encampment
The view from the mountain, The mountain on left is Nangusan and the mountain on the right is Matsouyama

Our next target will be the grave site of Yoshitsugu Otani, after passing the encampments of other lords of the Western Allies, such as Yoshihiro Shimazu, Yukinaga Konishi, and Hideie Ukita. You need to walk for few kilometers to reach the target. However, some soldiers who joined the battle testified that the lords were positioned together in the range of only few hundreds of meters. This is another mystery that his often debated by historians and experts.

The encampment of Yoshihiro Shimazu
The encampment of Yukinaga Konishi
The encampment of Hideie Ukita

You will eventually enter the Yamanaka area (which directly means “mountain area”), not like the Sekigahara field. There are actually some ruins of encampments, made by soil, which Yoshitsugu might have built. His grave is in the area, which is said that his retainer originally buried his head there. Takatora Todo, who had been his enemy, heard about it and developed the grave as we can see now. There are always offerings (such as flowers) in front of the grave, from his fans. This is probably because of his episodes in the battle. Yoshitsugu joined the Western Allies because of his friendship with Mitsunari but was defeated by the betrayal of Hideaki (according to the defacto theory).

The grave site of Yoshitsugu Otani

Tour to the Encampments of the Western Allies based on New Theories

Let us next go to the encampment of Yoshitsugu Otani from his grave nearby.
His encampment has been designated based on the defacto theory while a new theory says it was, in fact, that of the Shimazu troops. By the way, there is the view spot of Matsuoyama Mountain near the encampment as well. You can see the flag of Hideaki’s encampment from that spot. I think the view is one of the reasons why Yoshitsugu’s encampment was designated nearby in the defacto theory. The theory says Yoshitsugu was positioned in order to better monitor the betrayal of Hideaki. On the other hand, in the new theory, Yoshitsugu was actually in the Sekigahara field, so another lord was expected to use the encampment instead of him.

The encampment of Yoshitsugu Otani
The view spot of Matsuoyama Mountain
The flag of the encampment of Hideaki Kobayakawa on Matsuoyama Mountain, seen from the view spot

We will next go to the encampment of Mitsunari Ishida, based on the new theory, after climbing down the mountain area. If you walk on the Old Nakasendo Road, you will eventually see a hill up ahead, which is the encampment, called “Jigai-ga-oka”. The hill is also a historical site of Jinshin War during the Ancient Time, called “Jigai-mine-no-sanbon-sugi” which means “The three cedars on Suicide Hill”. A tradition says as followed:
Prince Otomo was defeated by Prince Oama during the war and killed himself in another place. People around the hill, who loved him, got his head and buried in the hill. The three cedars are said to be the mark, which you can visit and see.

Jigai-ga-oka Hill
The three cedars on Suicide Hill, The two remaining cedar trees are not accessible however, because they have a chain fence around them

There is one more spot regarding both the Sekigahara Battle and the Jinshin War, after going on the road over Fujikogawa River. You can find Fuwanoseki Museum, which are the ruins of Fuwanoseki (which means Fuwa Gateway). The new theory says this spot was the encampment of Yoshitsugu Otani. In the Jinshin War, the gateway was the border between the forces of Otomo (the west) and Oama (the east). In the Sekigahara Battle, Sekigahara (which directly means “gateway field”) was that of the Western and Eastern Allies.

Fujikogawa River in the front and Fuwanoseki Museum on the hill in the back
The Fuwanoseki Museum as the ruins of Fuwa Gateway, which might have also been the encampment of Yoshitsugu Otani, The white flag says “Fuwa Gate” while the red flag says “Jinshin War”

We will get closer to Matsuoyama Mountain. There are lots of flags of the Kobayakawa Clan at its entrance. It has a nice atmosphere.

The entrance to Matsuoyama Mountain as the encampment of Hideaki Kobayakawa, The yellow flags show the family crest of Kobayakawa. The 4 flags on the left show two sickles crossing each other.

Going to Matsuoyama Mountain

Matsuoyama Mountain is 293m above sea level and about 200m above the foot of the mountain. If you drive your car, you can park it at the foot. The trail to the top is part of Tokai Natural Trail, which has been well developed. The number of Hideaki’s troops were said to be about 8,000 to 15,000. They were probably stationed from the foot all the way to the top. If the Toi-deppo story is true, the soldiers at the foot would have been able to hear it.

The starting point of the trail, Notice the basket of sticks which is free for visitors to use.  Make sure you return it to the original basket after using it
The trail at the foot

Matsuoyama Castle is often called the encampment of Hideaki Kobayakawa, in fact, it was a full-scale castle. It had the main enclosure on the top and several other enclosures on its ridges. They were surrounded by earthen walls one by one and were divided by dry moats from each other. It also had ditches on the ridges and vertical moats on the slopes in order to prevent enemies from invading it. The castle was mostly fortified by the Western Allies just before the Sekigahara Battle. It was done using natural terrain and construction with soil.

The diorama of Matsuoyama Castle, exhibited by Sekigahara Town History
& Folklore Museum

The trail looks like a well-developed forest road before turning into a fork. There is a sign which says 850m to the top. As you get close to the top, the trail goes beside a ridge which was the eastern enclosure of the castle. If you were an enemy back then, you would have been attacked by the defenders above.

Turn right, at the flag, Notice the drain on the road.  When it rains, the water flows down the mountain, and goes to the drains
850m to the top
The trail goes beside the eastern enclosure

You will eventually see several flags standing on the main enclosure of the top above. One of them is that of Hideaki Kobayakawa’s encampment, which you saw from the view spot of Matsuoyama Mountain. The view from the top is so nice that you will be encouraged to stop and stare for a while. It would have been the view of Kobayakawa according to the defacto theory.

The top will be soon
The main enclosure on the top
The flag of the encampment of Hideaki Kobayakawa
The view of the Sekigahara field from the top of Matsuoyama Mountain, It would have been great if the town decided to cut the trees so that viewers could get a better view of Sekigahara Field

Is it a Castle or is it an Encampment?

Let us check out if Matsuoyama Castle is worth for a full-scale castle at the site. In fact, the opposite side of the trail we climbed looks more fortified, according to the pamphlet of Matsuoyama Castle. (unfortunately, the pamphlet is only available in Japanese)
We will enter the castle from the side.

The layout of the castle (from the pamphlet of Matsuoyama Castle), we first came from above

The path of the entrance gets narrower by being cut by the ditches on both sides. You will next pass an enclosure like a position, which is called the enclosure like Umadashi (the position which sticks out from the gate).

The narrow entrance
The enclosure like Umadashi

The path gets narrower again and wind towards the main enclosure. The entrance of the main enclosure is a square, surrounded by earthen walls, which is generally called Masugata. The route you walked on right now may be the front of the castle, where Hideaki might have also been at.

The path becomes narrow again
The path goes close to the main enclosure, Notice the wooden steps that were added later on by the town
The Masugata system at the entrance of the enclosure

You can also walk down to the dry moats surrounding the main enclosure, from the front of the Masugata system. You will see the vertical cliffs on the slopes of the enclosure, which were artificially cut for defense, on the way to the moats. The bottom of the moats looks spacious tough it is covered with trees and grass now. Historians speculate that it was used as passages or stations for soldiers. The moats also have earthen walls like normal enclosures have.

Going down to the dry moats
The vertical cliffs, Notice the narrow road partially covered in plants.  On the right, is the artificially cut soil, in order ot make the slope steeper for the enemies
The bottom of the moat
The earthen walls on the moat, Notice the sign in Japanese saying “altered earthen walls”

Finally, we will climb another enclosure on a hill, the opposite of the main enclosure. The top of the enclosure is leveled, probably in order to accommodate soldiers in the past. Overall, Matsuoyama Castle must have been a large basement for the Sekigahara Battle. I have confirmed that it was not only a simple encampment but also a full-scale castle.

Climbing the slope to another enclosure
The top of the enclosure

My Impression

After visiting the Sekigahara area, I think it still has a mysterious vibe and can accept adventurous spirits with many theories. In addition, I also learned that the area has a long history including the gateway and battle between eastern and western Japan since the ancient time. In fact, the battle between them still continues today in the category of noodles. You can buy two types of instant noodles for eastern and western Japan there at the souvenir shop. Gifu Sekigahara Battlefield Memorial Museum is a very popular spot for visitors where you can learn about the battle and buy other souvenirs. You can also get Goshuin stamps (you can stamp a piece of paper to commemorate your experience) of the encampments you visited there; However, you will need to show the pictures to the counter staff as evidence.

The Gifu Sekigahara Battlefield Memorial Museum
The two types of instant noodles for eastern and western Japan, The left is the “western type” while the one on the right is the “eastern type”.
The Goshuin stamps for three encampments, The left is the grave of Otani, the center represents Matsuoyama Mountain, and finally the one the right is Sasaoyama

That’s all. Thank you.

Back to “Matsuoyama Castle Part1”

205.Matsuoyama Castle Part1

The battle of Sekigahara, which occurred in 1600, is one of the biggest events in Japanese history. The highlight of the battle has been said to be the betrayal of Hideaki Kobayakawa. However, historians are trying to re-create the Sekigahara story by reviewing the few remaining primary sources and some of the secondary ones which were reliable.

Location and History

Introduction

The battle of Sekigahara, which occurred on the 15th of September 1600 (according to the lunar calendar), is one of the biggest events in Japanese history. The highlight of the battle has been said to be the betrayal of Hideaki Kobayakawa. The widely accepted theory says the followings. Hideaki first supported the western allies and settled on Matsuoyama Castle, in the south of the Sekigahara field. However, he still waited to see the battle for a while, wondering which ally would be better, the eastern or the western. He had made a secret agreement with Ieyasu Tokugawa, who was the top of the eastern allies, to support. Initially, Koyakawa did not move, therefore Ieyasu got tired of waiting. He then ordered his soldiers to shoot at the Hideaki’s troops. The shooting was called “Toi-deppo” which means to force by guns. Hideaki was very surprised to hear that. In that instance, he quickly decided to support the eastern allies. This indecision by Kobayakawa lead to the death of Mitsunari, but gave victory to Ieyasu.

The folding screens of the Sekigahara Battle, owned by Sekigahara Town History and Folklore Museum (licensed under Public Domain via Wikimedia Commons)

Recent studies suggest the betrayal of Hideaki and the Toi-deppo story.
The whole story of the Sekigahara battle is consisted of very few primary sources and many other secondary sources. The Toi-deppo story comes from one of the secondary sources. The Sekigahara Battle is long. One part of the story refers to Toi-Deppo, which was first written in the Keicho Gunki, a war chronicle which was written over 50 years after the battle. If the story is a fiction, the timing of Hideaki’s decision would also be doubtful. Historians are trying to re-create the Sekigahara story by reviewing the few remaining primary sources and some of the secondary ones which were reliable. In addition, Matsuoyama Castle has been said to be the base of Hideaki Kobayakawa during the Sekigahara battle. However, it would also be important to know when and how the castle was built and used.

The portrait of Hideaki Kobayakawa, owned by Kodaiji Temple (licensed under Public Domain via Wikimedia Commons)

This article will explain three different theories of Hideaki and Matsuoyama Castle with three different viewpoints.
The viewpoints will include:
a. What and where did Hideaki go before the Sekigahara battle?
b. Why did Sekigahara become the battlefield and when and how did Hideaki settle on Matsuoyama Castle?
c. When did Hideaki really decided to support the eastern allies?

The theories on this article will include:

  1. The defacto theory including the Toi-deppo story
  2. The theory that Hideaki was not a betrayer
  3. The theory that the western allies would attack Matsuoyama Castle

    As a preface, I will describe the prehistory of Hideaki and Matsuoyama Castle before the battle.

Hideaki and Matsuoyama Castle before Sekigahara Battle.

Hideaki was born in 1582 as the fifth boy of Iesada Kinoshita who was the big brother of Kitano-mandokoro, the first lady of Hideyoshi Toyotomi. He was adopted by Hideyoshi when he was a child and was raised by Kitano-mandokoro. Surprisingly, Hiedaki celebrated his Coming of Age at only 7 years old and became a noble. This was because he was one of the candidates to be Hideyoshi’s successor. However, after Hideyori Toyotomi, Hideyoshi’s own child was born, Hideaki was adopted again by the Kobayakawa Clan. Hideyoshi thought Hideyori would have become his successor.

The portrait of Iesada Kinoshita, the biological father of Hideaki, owned by Kenninji Temple (licensed under Public Domain via Wikimedia Commons)

There is an interesting episode about that from a war chronicle as follow. Hideyoshi originally wanted to adopt Hideaki to the Mori Clan and for the Mori Clan to take over, which was the head family of the Kobayakawa Clan. Takakage Kobayakawa, the lord of the clan offered to Hideyoshi to accept Hideaki to protect his master. However, according to historians, Takakage probably decided it by himself. This was because Takakage was an independent lord after he was given his own territory by Hideyoshi. Takakage assumed he would return the territory to Hideyoshi so that he could build a good relationship with him.

The portrait of Takakage Kobayakawa, owned by Beisanji Temple (licensed under Public Domain via Wikimedia Commons)

Hideaki’s new territory was at Chikuzen Province (which is part of Fukuoka Prefecture now) which was one of the basements for the invasion of Korea by Hideyoshi. Hideaki also went to Korea as the supreme commander when he was 16 years old (so, it was just a formality). However, when he went back to Japan in 1598, he was forced to move to Echizen Province (the current Fukui Pref.) by Hideyoshi. The reason for it is uncertain. War cornicles suggest that Hideaki made a mistake in the invasion, while historians speculate that Hideyoshi wanted to rule Chikuzen Province directly to boost his invasion. The fact is, after Hideyoshi died, that Hideaki returned to Chikuzen Province and was considered one of the great lords of Japan, following the members of Counsil of Five Elders in the top government. This would trigger the Battle of Sekigahara.

The Portrait of Hideyoshi Toyotomi, attributed to Mitsunobu Kano, owned by Kodaiji Temple (licensed under Public Domain via Wikimedia Commons)

Matsuoyama Castle was located on the border between Omi (the current Shiga Pref.) and Mino (Gifu Pref.) Provinces. A record says that a retainer of Nagamasa Azai, who owned Omi Province, was assigned to the castle during the Sengoku Period. This was probably because Nagamasa was against Nobunaga Oda who owned Mino Province at that time. Nobunaga would eventually get Omi Province before the castle was abandoned. On the 10th of Argust, 1600 (according to the luna calendar), Mitsunari Ishida entered Ogaki Castle. Mitsunari ordered his retainer to resume Matsuoyama Castle. Mitsunari thought that his Western Allies would attack the Eastern Allies based on Ogaki Castle, backed up by other mountain castles. Matsuoyama Castle was one of them. A historian speculates that Mitsunari thought that Terumoto Mori, the greatest lord in the Western Allies would enter Matsuoyama Castle. Anyway, the castle was refortified again to prepare for the battle.

The flag of Hideaki Kobayakawa at the ruins of Matsuoyama Castle; You can see this flag on top of the mountain, This is a modern flag that helps tourist find this location

Defacto theory including Toi-deppo story

It is confirmed that the Western Allies captured Fushimi Castle on the 1st of August (according to the lunar calendar). It is also certain that the troops of Hideaki Kobayakawa joined the attackers as the main force. After that, according to the de facto theory, many of the Western Allies, including Mitsunari Ishida, stayed in Ogaki Castle, while Hideaki marched over to Omi Province (the current Shiga Province). There is evidence of his actions there. remains at a temple of the province. There is a noticeboard where Hideak’s soldiers were asked not to be violent in the temple. Hideaki still supported the Western Allies, however, he also negotiated with the Eastern Allies. A secret letter from Nagamasa Kuroda and Yoshinaga Asano was given to Hideaki before the battle. The letter is written as followed.

“We (Nagamasa and Yoshinaga) will need to serve Kitano-mandokoro.
You need to decide whether or not you will support us until Ieyasu arrives here.”

Kitano-mandokoro took care of Nagamasa earlier on. He managed to persuade Hideaki that it would be needed to support the Eastern Allies if Hideaki wanted to serve Kitano-mandokoro from then on.

The temple whom Hideaki gave the noticeboard (quoted from the website of Maibara City)

Ieyasu arrived at Aakasaka Camp on the 14th of September, near Ogaki Castle. He wanted to have an open field battle, which he was good at, so he needed to lure Mitsunari out from the castle. Ieyasu intentionally announced that he would attack Sawayama Castle, which was Mitsunari’s home and far to the west from Ogaki. When Mitsunari heard this, he was surprised and left the castle in a hurry, got ahead of Ieyasu, and took up positions on Sekigahara Field on the way to Sawayama. Hideaki also reached Matsuoyama Castle in the south of Sekigahara in accordance with Mitsunari’s instructions. Historians speculate that Mitsunari might have tried to escape to Sawayama Castle with his own decision. This is because a letter of Hiroie Kikkawa, who was one of the members of the Western Allies on Nangusan Castle between Ogaki and Sekigahara, says so. However, Mitsunari couldn’t do that because had to prevent the eastern allies from invading Sekigahara on the way there. Yoshitsugu Otani, a lord of the Western Allies only expected that Hideaki would betray him, therefore, Yoshitsugu’s troops moved closer to Matsuoyama.

The portrait of Mitsunari Ishida, from the database of Historiographical Institute, the University of Tokyo (licensed under Public Domain via Wikimedia Commons)

The battle between the Eastern and the Western Allies occurred early in the morning on the 15th of September. It went back and forth until noon. Hiroie’s troops on Nangusan and Kobayakawa’s troops didn’t move because of their secret pact with Ieyasu. However, Ieyasu got annoyed as Hideaki had also promised that he would join the Eastern Allies. That’s why Ieyasu ordered the Toi-deppo (a way to induce or encourage solider to move by shooting directly at them). Hideaki’s decision happened around noon. Some of the soldiers who joined the Western Allies testified after the battle as followed:

“The Eastern Allies and Otani’s troops battled each other 6 or 7 times in the morning. Kobayakawa’s troops, then, rushed down from the mountain into Otani’s side and destroyed them.”

As for the Toi-deppo story, it may be a fiction as mentioned above. However, a historian found another tradition that might have been the origin of the story as followed:

An old man in Bizen Province (the current Okayama Pref.) heard about an interesting story from Kobayakawa’s retainer. During the battle, Hideaki heard gunshots at the foot of the mountain. His retainers reported that the shooters of the Eastern Allies said that the gunshots were not intentional and that they just misfired. The retainers also added it might have included something else.

The historian speculates that the shooting could have been an indirect warning from Ieyasu. However, this theory is still not the number one theory according to historians.

The Portrait of Ieyasu Tokugawa, attributed to Tanyu Kano, owned by Osaka Castle Museum (licensed under Public Domain via Wikimedia Commons)

Theory that Hideaki was not a Betrayer

I will next explain a new theory about Hideaki and Matsuoyama Castle. Accorting to this theory, it is uncertain where Hideaki was after the battle of Fushimi Castle just before the Sekigahara Battle. The de facto theory says he was in Omi Province at that time. However, that comes from the family records of the Inaba Clan which was written during the Edo Period. The records also say their founder, who was a senior vassal of Hideaki, captured Matsuoyama Castle for the Eastern Allies. That means the records were manipulated by his descendants to show their contributions to the current shogunate, which may not be plausible now. On the other hand, a lord of the Eastern Allies reported that Hideaki stayed in Ogaki Castle just before the Sekigahara Battle. This is contradictory. Overall, in my opinion, I think Hideaki was undecided as to who he would support until the moment he rode up the mountain.

The portrait of Masanari Inaba, who was a senior vassal of Hideaki, owned by Kanagawa Prefectural Museum of Cultural History (licensed under Public Domain via Wikimedia Commons)

In fact, there is also no certain evidence where Hideaki was positioned at the beginning of Sekigahara Battle. However, another evidence suggests it. The letter of Hiroie Kikkawa, mentioned above, says an interesting matter just before the battle.

“The Western Allies moved from Ogaki Castle to Yamanaka (the west of Sekigahara) in order to rescue Yoshitsugu Otani because Hedeaki would be fighting against them.”

According to the letter, Hideaki and Yoshitsugu had already arrived early to inspect the field. In addition, a letter that Masamune Date wrote, who was reported from his relative about the Sekigahara battle, also says:

“The Western Allies moved from Ogaki Castle to support Nangusan Castle.”

Overall, historians speculate why Sekigahara became the battlefield as followed: Ieyasu at Akasaka Camp first tried to attack Nangusan Castle. Mitsunari heard about this and tried to intercept Hideaki, so he decided to leave Ogaki Castle and went to Sekigahara. Then, Hiroie Kikkawa at Nangusan Castle surrendered to Ieyasu who next ordered his troops to chase after Mitsunari. The Western Allies eventually reached Yamanaka and positioned themselves, which was not Sekigahara. This is another different point from the defacto theory.

The portrait of Hiroie Kikkawa, owned by Historiographical Institute the University of Tokyo (licensed under Public Domain via Wikimedia Commons)

If they are true, Hideaki declared he would join the Eastern Allies at the latest the day before the battle. The battle started around 10am, where Hideaki joined it at the same time, and the Western Allies were defeated by the Eastern Allies quickly. They are different from the defacto story. The theories of the starting time of the battle are also different depending on the testimonies of the participants. Historians speculate as followed. In the early morning at Sekigahara field which was covered in fog. The Otani troops went ahead from the Yamanaka area to the Sekigahara field. It first battled against the frontline of the Eastern Allies. When the fog cleared up around 10am, the Kobayakawa troops attacked the Otani troops which would eventually be destroyed. After that, the main forces from both the Eastern and Western Allies fought against each other at the Yamanaka area, but the Western Allies were also destroyed in a short amount of time. Ieyasu wrote in his letters that Hideaki worked well in Sekigahara and his troops destroyed the Western Allies including Mitsunari in Yamanaka.

The last position of Ieyasu Tokugawa at the Sekigahara field, this is the encampment of the eastern allies, The two inner flags show Ieyasu’s family crest, while the two outer flags show his motto

The theory that Western Allies would attack Matsuoyama Castle

The previous theory can help us understand that Hideaki was not a betrayer in the middle of the battle. However, the theory is consisted of much circumstantial evidence. It doesn’t show us the clear conflicted formation between Hideaki and the Western Allies. (Situations of battles may sometimes be like that.) Another theory by another historian may clear this up. The main idea of the theory is that the Sekigahara Battle happened when the Western Allies tried to destroy Hideaki’s troops on Matsuoyama Castle. In this theory, Hideaki was stationed in Omi Province and negotiated with the Eastern Allies before entering the castile, the same as the defacto theory. However, the theory speculates that Hideaki made his decision to join the Eastern Allies in advance of reaching Matsuoyama Castle, which is the different point from the defacto theory.

The ruins of Matsuoyama Castle

The biggest difference in this theory from other ones is the reason why Mitsunari left Ogaki Castle. According to this theory, Mitsunari heard about Hideaki’s rebellion during the meeting at the castle on the 14th of September, the day before the Sekigahara Battle. Mitsunari decided to leave the castle to destroy Hideaki. One of the pieces of evidence for the theory is the same part of the letter Hiroie Kikkawa wrote, as the previous theory uses. It says “the Western Allies went from Ogaki Castle to Yamanaka (near Sekigahara) in order to rescue Yoshitsugu Otani because Hideaki would be fighting against them” in the previous theory. However, the same part says in this theory that “The Western Allies were going to attack Yamanaka, which meant Hideaki’s rebellion became obvious, so Yoshitsugu Otani followed them from Ogaki Castle.” Why are the interpretations of the same part so different between each other? This is probably because letters of warlords were usually written using simple and often vague facts, so that the interpretations of the current historians may sometimes become different. Another reason is sometimes the messenger would be intercepted, and vague instructions would be hard for the enemy to understand.

The grave of Yoshitsugu Otani in the Yamanaka area

Mitsunari was positioned on Jigai-ga-oka Hill in front of Matsuoyama Castle on Matsuoyama Mountain, not on Sasaoyama Mountain which the defacto theory says. According to the testimonies of some soldiers who joined the battle, the Ukita and Konishi’s troops were on the frontline against the castle to the south, back upped by the Shimazu’s troops. Mitsunari’s troops were in the eastern side of the Shimazu. The Eastern Allies including Ieyasu chased after Mitsunari in order to rescue Hideaki who had already joined them. That’s why they saw, from the east, the Western Allies like Miatunari on the frontline, back upped by the Shimazu’s troops, which were written in other records. The Otani’s troops finally arrived and was positioned at Sekigahara field in the eastern side of his allies. As a result, they were first attacked by the Eastern Allies, then sandwiched between the Eastern Allies and Hideaki’s troops, and eventually destroyed.

Jigai-ga-oka Hill

Some of the soldiers who joined the Western Allies testified after the battle as followed:

“The Eastern Allies and Otani’s troops battled each other 6 or 7 times in the morning. Kobayakawa’s troops, then, rushed down from the mountain into Otani’s side and destroyed them.”

This is the same testimony that proves the defacto theory.
It is very interesting that this testimony proves two different situations.

To be continued in “Matsuoyama Castle Part2”