Busetsu Castle

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History

Busetsu was a small but prominent castle built circa 1504 – 1520 by Suganuma Sadanobu, lord of nearby Damine Castle on a 70m high hill in Inabu, modern-day north eastern Aichi Prefecture. Also known as Chifuku -Jo, Busetsu Castle lay on the border of Mikawa, Shinshu and Mino provinces, overlooking the important Chuma-Kaido highway, which branched off to the equally strategically important Iida-Kaido trade route. 450m north of the castle is the site of the Kamakura period (1185 -1333) Busetsu Ko-jo, or Old Busetsu Castle, built by the Nakura clan high on a mountain overlooking the present site.

Surrounded by Kawate Castle, Natsuyake Castle, Oshiyama Castle, Naka Castle, Noiri Castle and other fortificated mountaintops, Busetsu Castle was active for around 100 years and played an important role at the center of the information network, conveying enemy information via smoke signals.

In 1556, Shimojo Nobuuji of Shinshu (Nagano) attacked and brought down Busetsu after a fierce battle. During the Battle of Busetsu Valley, a princess of the castle fearing the invading forces committed suicide by jumping down a well, now known as Himedo (Princess Well).

Busetsu’s existence was of interest to the Takeda and the Tokugawa. In 1571, Takeda Shingen commenced a full-scale assault against Mikawa, leading an army of 25, 000 men from Iida southwards. Shocked at the numbers, Busetsu surrendered without fighting.

The Takeda then attacked Asuke and Kameyama castles before Noda Castle in Shinshiro, in 1573, where Shingen was shot by a sniper. Tokugawa Ieyasu’s eldest son, Matsudaira (Tokugawa) Nobuyasu fought his first battle aged 14 at the attack on Busetsu in 1573 in an attempt to win back the fortress.

Busetsu is next mentioned in history books and the Shincho-koki, the Chronicles of Lord Oda Nobunaga in 1575, after the late Takeda Shingen’s son, Takeda Katsuyori had attacked and taken Ena Akechi Castle, then attacked and captured another 18 castles before arriving at Nagashino, where the great gun battle took place. The battle against the joint Oda and Tokugawa forces served Katsuyori the greatest loss in Takeda clan history.

On May 21, 1575, the master of Damine Castle, Suganuma Sadatada, who had served with Takeda Katsuyori during the siege of Nagashino and subsequent battle, fled from Nagashino with the defeated Lord Takeda Katsuyori, having offered him refuge at Sadatada’s Damine Castle. Upon their arrival, they discovered that Sadatada’s uncle, Suganuma Sadanao, supported by clan vassal Imaizumi Dozen had defected to the Oda clan, and shut the gates on Sadatada and Katsuyori, denying them entry. As it was evening, and very dark in the middle of the mountains, they sought refuge in a nearby taka koya, a hawk coop, overnight. The next morning an 18 year-old samurai named Kihachiro led their escape across Mt. Dando to Busetsu Castle, about 20km away.

When they arrived at Busetsu Castle, the garrison had been reduced to support the Takeda at Nagashino, and the remaining handful of defenders were more than surprised to have Lord Katsuyori and Lord Sadatada suddenly turn up on their doorstep on the evening of May 22. Not having much to give them, Lord Katsuyori was offered warm Umezu, plum juice and vinegar tea, which he greatly appreciated, and (the beverage) has since remained a popular refreshment in the region. After a night in the castle’s honmaru, Katsuyori continued his escape to Shinano the next morning.

With the defeat of the Takeda, Busetsu came under Tokugawa control until 1590 when Tokugawa Ieyasu transferred to Edo (Tokyo) in the Kanto area. Busetsu was abandoned just after the Battle of Sekigahara in 1600.


Visit Notes

Busetsu is a hirayama-jo, a mountain and flat-land castle, well situated on a hill overlooking the Busetsu Valley on the delta of the Kuroda River to the north and the Nagura River to the east acting as natural moats. The old Bukeyashiki, warrior residences were located in an area directly north east of the castle, with Chuma Kaido running between the samurai homes. The castles’ main gate, the Daimon, was to north east. The lower areas directly west of the castle was marsh land adding to the fortresses’ protection.

The castle ruins descend like steps with the Honmaru, Ninomaru and Sannomaru constructed one below the other in a line, forming a Renkakushiki formation. This suggests a weak formation, as the important Honmaru baily is exposed on three sides, however the area is surrounded by numerous kuruwa baileys affording adequate protection. Busetsu has 16 main baileys, and over 30 smaller baileys. A swordsmith forgery was located on the site of one of the lower baileys.

The amount of earthworks and the quality of the early 16th century manual labor is amazing. Having large numbers of baileys carved into the hillside means lots of kirigishi, artificially created cliffs and steep slopes. A large Karabori, dry moat, winds its way through the site, linked to smaller dry moats carved into the hill itself. These remain in form from over 500 years ago! The site of the monomidai tower and noroshi smoke signal tower above the Honmaru now houses a small shrine. The Honmaru bailey is vacant, but is used as the shrine’s carpark. The Ninomaru bailey is also vacant, but the San-no-maru is now a vegetable garden. One of the larger baileys has long been used as graveyard, another as a gate-ball field. Others are gardens and even private housing on the castle site. Most are now overgrown with trees and bamboo.

The site hasn’t been maintained very well, and although a road has been built leading to the Honmaru, although it does not follow the original path in and out of the castle. It is thought the original route led from the Jokamachi, castle town below, to the lower corner of the San-no-maru bailey.

The castle has not yet undergone any research excavations, and one of the reasons is because it is dubious much would be revealed. The Honmaru and Ninomaru are now vacant, but during WWII were used as potato growing fields, which appears to have been the reason for the important soseki building foundation base stones having been dug up and removed. I discovered piles of large stones, which appear to be both soseki foundation stones and possibly roof weighting stones in the Ni-no-maru bailey. On March 30, 1984, the ruins of Busetsu Castle were designated as a Toyota City (former Inabu Town) Historic Site, along with nearby Busetsu Kojo.

Profile by Chris Glenn.




Gallery


Castle Profile
English Name Busetsu Castle
Japanese Name 武節城
Founder Sugunuma Sadanobu
Year Founded 1504-1520
Castle Type Mountaintop
Castle Condition Ruins only
Designations Local Historic Site
Historical Period Pre Edo Period
Artifacts Kuruwa
Features
Visitor Information
Access Nearest Station is Akechi Station on the Akechi Railway; 35 minute drive
Visitor Information 24/7 free; mountain
Time Required
Location Toyota, Aichi Prefecture
Coordinates 35° 12' 49.50" N, 137° 30' 18.90" E
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Admin
Added to Jcastle 2022
Contributor 豪谷
Admin Year Visited Viewer Contributed
Friends of JCastle
Yogo
Kojōdan


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Anonymous user #1

9 months ago
Score 0 You

Takeda Shingen was Not Shot and killed by a Sniper. Takeda Shingen's death has been reported as pulmonary tuberculosis in the Buke Jiki, and as throat or stomach cancer in the Koyo Gunkan. There's a theory that he was killed by a bullet or bullet wound, but this is generally regarded as a popular myth. In 1573, while laying siege to Noda castle in Mikawa, Shingen fell ill. A popular tradition holds that a defending sniper shot him.

However, the Koyo Gunkan mentions that Shingen had been ill and records, On the 11th day of the 4th month around 1pm, Lord Shingen's condition took a turn for the worst. His pulse became extremely rapid. On the night of the 12th, approximately 9pm, he developed an [abscess/rash] in his mouth, and 5 or 6 of his teeth fell out. He gradually weakened.

Isogai Masayoshi's Takeda Shingen, Kobayashi Keiichiro's Takeda Gunki, and other modern works on Shingen dismiss the sniper story, pointing out that only Tokugawa records make any mention of a sniper and that Shingen had been ill for some time prior to his death, which in any event occurred a full two months after Noda. Interestingly, Shingen had given up eating meat as a show of religious piety around 1563 but began eating fish and poultry again around the time of Noda for his health. The sniper version of events, made famous by Akira Kurosawa's film Kagemusha, holds that he was drawn close to the walls of the castle to listen to a defender playing a flute to raise the morale of his comrades.

However, this is strongly reminiscent of the death of Amako Masahisa, the difference being that Masahisa was the flute player playing for the benefit of his men. A defending archer guessed where he seated in the dark, let fly, and killed him.

It seems possible-even probable-that this story was adopted and adapted for the romantic death of Shingen, a death the Tokugawa could then claim credit for.
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EricShogun

9 months ago
Score 0++
Interesting commentary! In the recent Taiga Drama about Ieyasu, they portrayed Shingen's death as a sudden illness that made him weak and he eventually died too.
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ARTShogun

9 months ago
Score 0++
Without any solid evidence I'd take the princess in the well thing per grano salis too. Many, many castles have a similar story; if the castle is on a mountain then the womenfolk plunged off the cliff; if the castle is on gentler terrain then they drowned in the well. Almost certainly their ghosts now haunt the area. It's just the same motif people like to tell.