偉人・敗北からの教訓 2025年2月1日 第78回「太原雪斎・今川家の繁栄を維持できなかった軍師」
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00:00Although it was a coincidental victory, the defeat was inevitable.
00:07How did the foreigners, who had colored the history of Japan, lose?
00:12What was the cause and mistake behind it?
00:17This time, the Imagawa family's Daigokubashi, known as the Prime Minister of Japan,
00:23will reveal the cause of the defeat.
00:29Imagawa Yoshimoto, a teacher of the Imagawa family,
00:33also taught Tokugawa Ieyasu when he was young.
00:39However, the Imagawa family perished because of the death of Imagawa.
00:44What happened there?
00:48The philosophy of life learned from the failures of the defeated.
00:53The Lessons from the Defeated
01:04What do we learn from the failures of the foreigners in history?
01:11I'm Yuri Nakanishi, voice of Shinko.
01:15And I'm Jun Ito, a historian.
01:18Nice to meet you.
01:20There are quite a few people in history who became monks,
01:26but then joined politics or went to war.
01:32I think there are many different kinds of monks.
01:36There are some who hide their political views and follow the path of communism.
01:41And there are some who stick to politics and become the hands of the powerful
01:46and try to save the country.
01:51Today, I'd like to talk about the defeat of Taigen Sessai,
01:56one of the prime ministers of Japan.
02:01Sessai is famous as the military strategist of the Imagawa family,
02:06who supported Imagawa Yoshimoto.
02:09The name Sessai is the name of the prime minister, right?
02:13The correct name is Taigen Sofu.
02:18He was called Sessai
02:21because he had a private house near the Linzai Temple where he worked.
02:27And he called it Sessai himself.
02:30He also wrote Sessai Sofu in his signature.
02:34I think he liked the name Sessai.
02:38Sessai was adopted by Yoshimoto's father, Ujichika,
02:43who was an educator of the Imagawa family.
02:48Ujichika had many sons,
02:51so he decided to adopt Yoshimoto as his son-in-law.
02:55He heard about Sessai's future at the Linzai Temple
02:59and asked his son to become a teacher.
03:04However, Sessai's position was that he could become a teacher
03:08only halfway through his training.
03:11So he was reluctant at first.
03:14However, Ujichika sent him three times,
03:17so he accepted Yoshimoto as his son-in-law.
03:21The death of Yoshimoto, who was raised by Sessai's blood,
03:25must have been a very painful experience.
03:29I don't think Yoshimoto, who was 23 years old five years after his death,
03:33had ever thought of becoming a teacher.
03:37However, as the saying goes,
03:40prosperity is based on water.
03:43At the peak of prosperity,
03:46there is always a cause of water.
03:49So this time, I'd like to investigate
03:52why Sessai and Yoshimoto's relationship
03:56was so strong.
03:59This time, let's take a look at Sessai's life.
04:02First, let's take a look at Sessai's life.
04:05Let's take a look at Sessai's life.
04:08First, let's take a look at Sessai's life.
04:11Let's take a look at Sessai's life.
04:14Sessai was the prime minister of Imagawa Yoshimoto.
04:18In 1496, Sessai became the head of the Iharashi clan,
04:22a noble family of Suruga.
04:29He became a Buddhist monk in his teens,
04:32and when he finished his training in Kyoto,
04:35he was already a noble.
04:38Suruga's guardian, Imagawa Ujichika,
04:41who heard of his reputation,
04:44appointed Sessai as the head of the five schools.
04:48At this time, the head of the five schools
04:51was the 23-year-old Hougi Kumaru,
04:54and later, Imagawa Yoshimoto.
04:59Sessai took Yoshimoto to Kyoto
05:02and taught him a wide range of martial arts.
05:09In 1536, when Imagawa's brother,
05:12the head of the Iharashi clan, died,
05:16Yoshimoto took the successor's seat
05:19and fought against Genko Eitan, the third son.
05:24At this time, Sessai, Yoshimoto's successor,
05:27defeated Genko Eitan with Hanamura no Ran.
05:37Thus, Yoshimoto became the head of the clan
05:40and welcomed Sessai as the supreme advisor
05:43to the Iharashi clan.
05:48After defeating Oda in the battle of Azukizaka,
05:51Sessai played a major role in foreign affairs and military affairs,
05:54and in 1549,
05:57he took control of Nishimikawa.
06:01Sessai's leadership was led by
06:04the military alliance of the Three Kingdoms,
06:07which is extremely rare in the Sengoku period.
06:10With this alliance,
06:13Imagawa, Takeda, and Hojo
06:16grew into a powerful force
06:19in all parts of the country.
06:23Thus, Sessai, who played a major role
06:26as the head of the Imagawa family,
06:29died at the age of 60 in 1555.
06:35Then, just five years later,
06:38Imagawa Yoshimoto defeated him
06:41in the battle of Okehazama.
06:47After that, Ujizane was attacked
06:50by Takeda Shingen and Tokugawa Ieyasu,
06:53and the Imagawa family perished
06:56in less than 10 years.
07:01For Sessai, it was a crushing defeat.
07:04Why couldn't the Imagawa family
07:07maintain their prosperity
07:10after the death of Sessai?
07:16Let's take a look at the major events
07:19in the life of Taigen Sessai.
07:28Sessai is like Imagawa Yoshimoto.
07:31The relationship between the two
07:34is very close.
07:37Sessai, the head of the Imagawa family,
07:40was a monk, but he also had
07:43knowledge of politics and military affairs.
07:46How did he acquire such knowledge?
07:49Sessai was born and raised
07:52in Kenninji, Kyoto.
07:55From a very young age,
07:58Sessai was familiar with politics and military affairs.
08:04Sessai had a wide range of connections.
08:07What kind of people were they connected to?
08:10He was a monk,
08:13so he had a wide range of connections.
08:16Hanagura's son, Ujiteru,
08:19and his son, Hikogoro,
08:22were the ones who were connected to Sessai.
08:25After the war, there was a conflict
08:28between Sessai and Imagawa Yoshimoto.
08:31Yoshimoto's older brother, Genko Eitan,
08:34was also a monk.
08:37Genko Eitan was supported by
08:40Imagawa's son, Kushimachi.
08:43He was a very influential person.
08:46However, Sessai took advantage of this situation
08:49and made Yoshimoto acknowledge
08:52Sessai's influence.
08:55He was very good at using connections.
08:58So, it was because of Sessai's connections
09:01that Yoshimoto was able to acquire Imagawa's knowledge.
09:04Many people call Sessai
09:07the military strategist of Imagawa.
09:10Others call him the prime minister.
09:13What kind of position do you think he was in?
09:16Sessai was a monk.
09:19Of course, he didn't have a formal position.
09:22However, after Yoshimoto became the head of Sessai,
09:25Sessai was in charge of politics, military affairs,
09:28and foreign affairs.
09:31He was like a fixer.
09:34What's interesting is that
09:37Sessai was actually in charge of military affairs.
09:40Even though he was a monk?
09:43Yes, even though he was a monk,
09:46Sessai was in charge of politics.
09:49I think it's a unique way of doing things in Imagawa.
09:52Sessai was so talented that he was called
09:55the prime minister of Imagawa.
09:58How did he change from the path of Buddha
10:01to the key person of the Imagawa family?
10:04Let's take a look.
10:07Sessai Taigen, the son of Yoshimoto Imagawa,
10:10was born into a noble family in Suruga.
10:13Sessai Taigen, the son of Yoshimoto Imagawa,
10:16was born into a noble family in Suruga.
10:19Why did Sessai, the son of a samurai,
10:22join the samurai family?
10:25Mr. Owada, who specializes in Sengoku history,
10:28tells us this story.
10:31At that time, there were a few boys.
10:34They were supposed to take after the samurai,
10:37but other than that,
10:40they didn't do well.
10:43So, they went to Kyoto
10:46to learn the real Zen of Rinzai.
10:49They lived in Kenninji in Kyoto.
10:54Sessai, who showed excellent ability from an early age,
10:57raised his position as a monk to a new level.
11:00raised his position as a monk to a new level.
11:05His fame spread to Muromachi Bakufu and Kuge society.
11:09He was also a disciple of Imagawa Ujishika,
11:12the lord of Suruga, a place of origin.
11:19So, Ujishika asked Sessai to teach
11:22the five-year-old Hougikumaru.
11:28However, Sessai refused this request twice.
11:31However, Sessai refused this request twice.
11:51However, Sessai couldn't refuse the request
11:54of the lord of Suruga.
11:57So, he accepted the request.
12:02The 23-year-old Ujishika was entrusted with this task.
12:05The 23-year-old Ujishika was entrusted with this task.
12:08His name was Imagawa Yoshimoto.
12:12Sessai took the boy, Yoshimoto, to Kyoto.
12:15Sessai took the boy, Yoshimoto, to Kyoto.
12:18Sessai took the boy, Yoshimoto, to Kyoto.
12:21After a while,
12:24Sessai moved his training place to Myoshinji,
12:27which was different from Shuha.
12:31Why did Sessai move to Myoshinji?
12:34The reason was that
12:37he wanted to teach Sessai.
12:42Myoshinji is a practical school.
12:45Myoshinji is a practical school.
12:48Myoshinji is a practical school.
12:51So, I wanted Yoshimoto to teach Sessai.
12:54So, I wanted Yoshimoto to teach Sessai.
12:57So, I wanted Yoshimoto to teach Sessai.
13:00According to a theory,
13:03Sessai was anxious about Yoshimoto,
13:06who was a supervisor at Kenrinji.
13:09Sessai was anxious about Yoshimoto,
13:12who was a supervisor at Kenrinji.
13:15Sessai and Yoshimoto were trained together.
13:18One day, Sessai was called back by Tsuruga.
13:21One day, Sessai was called back by Tsuruga.
13:28Watanabe, a Kyodo member, said
13:31that Sessai and Yoshimoto had been had hoped for something.
13:34that Sessai and Yoshimoto had been hoped for something.
13:38Fujiteru's goal was to develop to Mikawa.
13:42Fujiteru's goal was to develop to Mikawa.
13:45Yoshimoto and Sessai were tried to go to Kofu,
13:48that is, to Takeda or Hojo.
13:51and Sessai was expected to go there.
13:54Sessai was expected to go there.
13:55I think that's why I was called back to Sessai.
14:00Sessai and Yoshimoto stopped their training in Kyoto and returned to Surga.
14:06They were placed in a temple near the border with Takeda Hojo.
14:15On the other hand, Sessai had a wish as a monk,
14:19which was to rebuild the Myoshinji temple.
14:28I think it was important to spread the teachings of Myoshinji
14:32so that the people of Sessai could live in peace and tranquility.
14:42However, something unexpected happened to Sessai and Yoshimoto.
14:49Sessai and Yoshimoto became enemies.
15:09Shortly after Sessai and Yoshimoto returned to Surga,
15:13the head of the Imagawa family, Ujiteru, passed away.
15:18On the same day, the head of the Imagawa family, Ujiteru, passed away,
15:22and the Imagawa family began to fight for power.
15:28The three sons of Imagawa Ujichika, Genko Etan, and Yoshimoto, the fifth son,
15:34were the ones who raised their voices.
15:40At that time, Sessai, who had helped Yoshimoto,
15:44showed great power.
15:49Sessai was the one who used Kyoto's human veins
15:53and tried to get a good deal from the Shogun.
16:01Thanks to Sessai's human veins,
16:04the Surga nobilities became allies with Yoshimoto,
16:08who had already been appointed as the shogun.
16:12Then, Sessai cornered Genko Etan to Hanagura Castle
16:17and killed him with his own hands.
16:23Yoshimoto, who won the Hanagura war,
16:27became the head of the Imagawa family.
16:33And Sessai, who was his teacher,
16:37became the highest official of the Imagawa family.
16:45Sessai had absolute trust in Yoshimoto.
16:50He was like a teacher to him.
16:55He was like a father to him.
17:01At that time, Yoshimoto was only 18 years old.
17:05He was already married,
17:07so he didn't know much about his family.
17:13Sessai became the right-hand man of Yoshimoto,
17:17who was young,
17:19and began to show his power to the Imagawa family.
17:26Yoshimoto came back from Kyoto to the Imagawa family,
17:30and he must have been heartbroken.
17:33At that time, Sessai,
17:35who was about his father's age,
17:37was there for him.
17:39I can understand why he was so dependent on Sessai.
17:43He must have wanted Sessai to be by his side.
17:47That's exactly right.
17:49It was because of Sessai
17:51that Yoshimoto had the confidence
17:53to lead the Imagawa family as a shogun.
17:55Sessai was like a child to Yoshimoto.
17:59Sessai supported Sessai like a child.
18:04Did Sessai have any expectations for Yoshimoto?
18:08Of course, Sessai was a shogun,
18:10so he must have felt Sessai's talent.
18:14However, I don't think I can evaluate Yoshimoto.
18:18Oh, really?
18:20First of all, Suien, Suruga, Totoimi, and Mika.
18:23It was his father, Ujitsuka,
18:25who built the Three Kingdoms Peninsula.
18:27Yoshimoto didn't give up Sessai
18:31to become a shogun.
18:34There was the Three Kingdoms Alliance.
18:38That's how he was able to maintain both countries.
18:41In other words, he wasn't attacked by Takeda and Hojo.
18:45In the Imagawa family,
18:47there was a mysterious incident
18:49where Yoshimoto's older brother
18:51suddenly passed away.
18:55I feel like there was a hidden story behind this incident.
18:59What do you think?
19:01There aren't many records about this incident.
19:04We can only speculate
19:06why they passed away on the same day.
19:09Until now,
19:11it was said that it was an incident
19:13caused by Kushima,
19:15who was backing up Genko Eitan.
19:17But that's not the case with Kaedan.
19:19Because of the Hanagura Incident,
19:22Kushima was able to turn the tide
19:24and was able to defeat Genko Eitan.
19:26Of course, when a war breaks out,
19:28it's decided what to do next.
19:31A war is a speed game.
19:34In that sense,
19:36it's strange that Kushima
19:38couldn't adjust his position
19:40and lost the war.
19:42There was another reason
19:44why they passed away on the same day.
19:46It was an epidemic.
19:48According to the records of the time,
19:50there was an epidemic
19:52in the eastern part of Japan.
19:54In fact,
19:56Ujiteru and Hikokoro Ujitoki
19:58visited Odawara
20:00just before they passed away.
20:02It was a visit to their hometown.
20:04They met a lot of people there.
20:06It's been said that
20:08they got infected
20:10because of that.
20:12I see.
20:14Yoshimoto,
20:16who came from the Imagawa family,
20:18was expected to play an important role.
20:20What kind of role
20:22did you expect him to play?
20:24Yoshimoto
20:26was educated
20:28as a monk.
20:30He was able to learn
20:32how to be a monk
20:34in Kyoto.
20:36He had to become
20:38the head of the Daimyo family.
20:40He became the head
20:42when he was 18 years old.
20:44It's strange.
20:46If he was a good monk,
20:48he could have been
20:50the head of the Daimyo family.
20:52But Yoshimoto
20:54was not raised as a monk.
20:56So he was a bit disappointed.
20:58So Yoshimoto
21:00was expected to
21:02be the head of the Daimyo family.
21:06It's a great honor
21:08to be able to
21:10support his disciple
21:12in such a difficult situation.
21:14Be careful
21:16not to overdo it.
21:20The Imagawa family
21:22started a new era
21:24with Sessai and Yoshimoto.
21:26However,
21:28there was something
21:30unexpected.
21:32Take a look at this.
21:34Sessai,
21:36who was known as
21:38the prime minister of the country,
21:40was in trouble in various areas.
21:42First, he approached
21:44Mr. Takeda,
21:46who had been his enemy for many years.
21:48He welcomed
21:50his daughter,
21:52Nobutora,
21:54and formed an alliance.
21:56However,
21:58Mr. Hojo,
22:00who was at odds
22:02with Mr. Takeda,
22:04rebelled.
22:06Mr. Hojo and Mr. Imagawa
22:08were good friends.
22:10Mr. Takeda thought
22:12that the Imagawa family
22:14would be at peace
22:16if Mr. Hojo and Mr. Imagawa
22:18became good friends.
22:20However,
22:22Mr. Takeda and Mr. Imagawa
22:24joined hands
22:26without consulting Mr. Hojo.
22:28Mr. Hojo probably got angry.
22:32Mr. Hojo moved to
22:34Mr. Imagawa's house.
22:36Mr. Imagawa lost
22:38Mr. Hojo.
22:40Even so,
22:42Mr. Takeda and
22:44Mr. Uesugi,
22:46who had formed an alliance,
22:48regained their territory
22:50and reconciled with Mr. Hojo.
22:54Mr. Takeda,
22:56who had appeased
22:58the threat from the east,
23:00planned to head west
23:02and head to Mikawa.
23:04There,
23:06he approached
23:08Mr. Matsudaira,
23:10who had just died.
23:12Mr. Ichihashi,
23:14a historian,
23:16said that
23:18it was not enough
23:20to rule Mikawa.
23:24Matsudaira's family
23:26split up.
23:28His family split up.
23:30The people who supported him
23:32and those who supported him
23:34were divided.
23:36That was when
23:38Yoshimoto
23:40took over.
23:44At that time,
23:46Owari's Nobuhide Oda
23:48was also aiming for Mikawa.
23:50The Imagawa family
23:52fought against Oda
23:54many times
23:56under Matsudaira's command
23:58and fought back.
24:02Sessai
24:04led his own army
24:06and fought,
24:08but something bad happened.
24:14Takeda,
24:16who was the next leader
24:18of Mr. Matsudaira,
24:20was captured by Oda
24:22as a hostage.
24:26At this rate,
24:28there was a possibility
24:30that Takeda would die.
24:35We must do something
24:37to get Takeda back.
24:41To get Takeda back
24:43is not only
24:45to save Matsudaira,
24:47but also
24:49to capture Imagawa.
24:53Sessai solved this problem
24:55by capturing
24:57Anjojo,
24:59the son of Oda Nobuhide.
25:03With Anjojo,
25:05Sessai captured
25:07Oda Nobuhide's son
25:09and exchanged him
25:11for Takeda.
25:15Anjojo was captured
25:17and Takeda was
25:19captured back.
25:21Sessai succeeded
25:23in controlling
25:25most of Mikawa.
25:28Sessai, who expanded
25:30Imagawa's forces,
25:32started another big job.
25:43Sessai was worried
25:45about the situation in the east,
25:47so he joined
25:49the relationship between
25:51Sagami's Hojo and
25:53Kai's Takeda.
25:55Takeda and Hojo
25:57formed the
25:59Three Kingdoms Alliance.
26:04The Three Kingdoms
26:06were united
26:08and supported
26:10the Three Kingdoms Alliance.
26:12Imagawa reached
26:14its heyday.
26:16Sessai was
26:18the prime minister
26:20of the country.
26:22Yoshimoto was
26:25the only one
26:27who could make decisions
26:29and take action.
26:31He was the only one
26:33who could do that.
26:35Sessai and I
26:37worked together
26:39to move forward.
26:45I think Yoshimoto
26:47listened to Sessai
26:49no matter what he said.
26:52It's been 18 years
26:54since Yoshimoto became the prime minister.
26:56Sessai and Yoshimoto
26:58grew the Imagawa family
27:00by working together.
27:03However,
27:05Hirahara,
27:07an organization expert,
27:09said there was a problem
27:11with Sessai's work.
27:13In the end,
27:15if many things
27:17are concentrated
27:19in Sessai's work,
27:21it's because
27:23Sessai was too much
27:25for the Imagawa family.
27:27That's what I think.
27:31The Imagawa family
27:33decided everything
27:35with Sessai and Yoshimoto.
27:37At some point,
27:39the Imagawa family
27:41lacked talent.
27:43In the Takeda family
27:45of Ringoku,
27:47Sessai and Yoshimoto
27:49were the only ones
27:51with talent.
27:53In the Imagawa family,
27:55it was decided
27:57by the top two.
27:59We had no choice
28:01but to follow it.
28:03Some people
28:05might have been
28:07dissatisfied
28:09or rebelled
28:11or gave up.
28:13I'm worried
28:15about my future.
28:19Sessai
28:21set a trap
28:23for a young man.
28:29Sessai,
28:31who was responsible
28:33for the human tragedy
28:35of the Imagawa family,
28:37was training
28:39a young man.
28:41Takeshi,
28:43who came to the Imagawa family
28:45as a hostage,
28:47was later named
28:49Tokugawa Ieyasu.
28:51In his book,
28:53Kikigaki,
28:55he wrote about
28:57Ieyasu's life as a monk.
28:59He relied on Sessai
29:01and learned
29:03how to read and write.
29:05Sessai
29:07had high expectations
29:09for Ieyasu.
29:13Sessai
29:15had high expectations
29:17for Ieyasu.
29:19Maybe Sessai
29:21was training
29:23Ieyasu
29:25to take his place
29:27in the family.
29:29Maybe he was
29:31training him
29:33to take his place.
29:35People often say
29:37Sessai was worried.
29:39He was training
29:41Takeshi,
29:43Motoyasu,
29:45and Ieyasu
29:47to make the Imagawa family
29:49strong.
29:51Sessai
29:53was training
29:55Motoyasu and Takeshi
29:57to make the Imagawa family strong.
30:01Sessai was training
30:03Ieyasu to support
30:05the Imagawa family
30:07to make the Imagawa family strong.
30:13What did Ieyasu think?
30:15What did Ieyasu think?
30:17He had high expectations.
30:19He wanted to meet
30:21his expectations.
30:23He thought
30:25the Imagawa family
30:27was strong.
30:29Ieyasu
30:31Ieyasu
30:33Ieyasu
30:35At the age of 14,
30:37Ieyasu passed away.
30:39Sessai
30:41turned 60.
30:43Sessai
30:45Sessai
30:47Sessai
30:49Sessai
30:51Sessai
30:53Sessai
30:55Sessai
30:57Sessai
31:00Just six months after Ieyasu passed away,
31:02just six months after Ieyasu passed away,
31:04Sessai passed away.
31:09Later, Ieyasu
31:11looked back
31:13to see if Yoshimoto
31:15was still talking to Sessai.
31:19The death of Sessai,
31:21who had supported him from when he was young,
31:23shook Yoshimoto.
31:295 years after the death of Sessai, Mr. Imagawa attacked Owari.
31:42Until then, Sessai was the main target of the battle against Oda.
31:50Now that Sessai was gone, Mr. Imagawa led a force of 25,000.
32:00However, Mr. Imagawa was defeated by Oda Nobunaga, who had only 2,000 men.
32:09This was a devastating defeat for Sessai.
32:15Sessai himself died 5 years ago.
32:20I think that's when the gears started to go crazy.
32:26Sessai's existence, which had supported everything,
32:30may have prevented Yoshimoto's growth.
32:34At this time, Ieyasu, who was leading a different force,
32:39became independent from the Imagawa family when he entered his hometown, Okazaki-jo.
32:48Why did Ieyasu, who was hoping for Sessai's future, abandon Imagawa and become independent?
32:57I think Ieyasu was already drawing his own image of leadership.
33:06I think that was based on what he learned from Sessai,
33:13so I think it had a big impact.
33:19Ieyasu, who was raised by Sessai as his successor,
33:23chose the path of standing at the top, not the number two.
33:29His independence and strong will may have been nurtured by Sessai's struggle.
33:37Thus, the Imagawa family, which had lost excellent people,
33:43was waiting for further tragedies.
33:47Yoshimoto wanted to raise a person who would support him,
33:54but in the end, he raised a person who would become number one.
33:59He gave birth to Ieyasu.
34:02It's really ironic.
34:05I think it's because he raised Ieyasu too much.
34:10Originally, there was a plan to support Ieyasu with Ujizane.
34:19But in the midst of the chaos,
34:24Ieyasu saw through Ujizane and made him independent.
34:29That's how the Imagawa family's future was decided.
34:32Ieyasu came to the Imagawa family as a hostage to Takechiyo.
34:39When I hear the word hostage, I get the impression that it's a bad word.
34:45But I don't think that's the case.
34:49There's been a lot of misunderstanding about hostages in the Sengoku period.
34:53In the Sengoku period, there were hostages from the Three Kingdoms.
34:59There were hostages from the Waboku period,
35:04and there were hostages from the Gogi period.
35:08But in the case of Ieyasu, his father, Hirotada, was already dead.
35:13So there was no possibility that Matsudaira Mikawa would rebel against him.
35:18So I think there are very few elements of hostages.
35:21Yoshimoto entrusted Ieyasu's education to Sessai.
35:26He may have said that he would raise Ieyasu as the number two son of Ujizane.
35:31So he was hoping that Ieyasu would become the center of support for the Imagawa family.
35:36I think so.
35:38And Ieyasu's country was Mikawa,
35:41so he could entrust the spiritual work of the Imagawa family to Sessai.
35:45So I think it was very rational for Sessai to raise Ieyasu as the center of support for the Imagawa family.
35:51That's right.
35:53The Imagawa family went down the path of destruction because of the death of Yoshimoto,
35:59but could Sessai have prevented the battle between the Okihazama after his death?
36:06Here is Jun Ito's point of view,
36:09looking at the other side of history from the perspective of a historian.
36:15There is a misunderstanding about the battle between the Okihazama.
36:19The Imagawa family has a strong image of winning the spiritual work.
36:24But the battle between the Oda and Imagawa families has been going on for a long time.
36:29It's been going on for years.
36:31There was a time when the Imagawa family was located in the south of the Atsuta Shrine.
36:35But due to the growth of the Nobunaga family, the Imagawa family was suppressed.
36:38So the Imagawa family was left with only the Narumi Otaka dormitory.
36:48If these two castles were destroyed,
36:51the Imagawa family would not only lose the castle in Okari, but also the Nishimikawa castle.
36:58So Sessai tried to maintain these two castles.
37:02He tried to rejuvenate the Imagawa family as much as possible.
37:04That's why Yoshimoto decided to leave the castle and try to protect these two castles.
37:11A distorted organization that does not continue without this person usually does not last long.
37:18The division of roles and the development of personnel is early.
37:23Despite Sessai's failure to follow his own lead, the Imagawa family fell into a stalemate.
37:30A further pursuit was waiting for them.
37:32Please take a look at this.
37:36After Sessai and Yoshimoto died,
37:39the Imagawa family's successor, Ujizane, strives to reunite the castles.
37:49Although he lost Mikawa because of Ieyasu's independence,
37:53Sessai's legacy, the Three Kingdoms Alliance,
37:57is protected by Suruga and Totomi.
38:03However, seven years after the Battle of Okehazama,
38:07the alliance of Takeda Shingen collapsed.
38:14Takeda cut ties with Imagawa,
38:18and joined forces with Tokugawa to invade the Imagawa territory.
38:21Ujizane joined them.
38:26The one who led the Three Kingdoms Alliance to its end
38:30was Ieyasu, who was raised by Arouko and Sessai.
38:35I didn't really want to destroy the Imagawa family.
38:40Because it was Ieyasu.
38:43But as a result,
38:46Takeda and Kumazaru were great.
38:48That's why I joined Totomi.
38:52Ujizane lost his territory to Takeda and Tokugawa.
38:57In 1569, he was surrounded by Ieyasu's army and surrendered.
39:05Thus, the Imagawa family, known as the Three Kingdoms Alliance, was destroyed.
39:11According to the result,
39:13the Imagawa family was destroyed by Ieyasu,
39:18and the Three Kingdoms Alliance was forced to destroy the Imagawa family.
39:24That's why Sessai was defeated.
39:33On the other hand,
39:36Ieyasu turned his back on the Imagawa family,
39:40which was completely dependent on Sessai.
39:43Even if he was a great strategist,
39:46like Sakai, Tadatsugu, Nishikawa, or Kazuma,
39:49he would never decide everything by himself.
39:53Ieyasu might have seen that
39:56as a result of their independence.
40:03After his independence,
40:06Ieyasu was assigned various roles,
40:09starting with Tokugawa,
40:11and ending with Sessai.
40:14He built a solid foundation of the Edo Shogunate,
40:18which lasted for 260 years.
40:21Ieyasu might have achieved this
40:24because he learned from Sessai,
40:27and learned from Sessai's failure.
40:32Ieyasu learned from Sessai's failure.
40:39Even if he was a great strategist,
40:42he would never decide everything by himself.
40:46Ieyasu learned from Sessai's failure.
40:50He learned from Sessai's failure.
40:53That's Ieyasu for you.
40:56In that sense,
40:58Ieyasu decided everything by himself.
41:01He didn't have to rely on anyone.
41:06This is different from Yoshimoto.
41:09But Yoshimoto had no choice.
41:12He was inexperienced.
41:15I think there is room for sympathy.
41:18After Sessai and Yoshimoto died,
41:21the Imagawa family disappeared.
41:24What do you think of Ujizane,
41:26the son of Yoshimoto?
41:29To put it simply,
41:32he was not incompetent.
41:35The reason for that is
41:38Yoshimoto's father was killed
41:41and the country was taken back by Ieyasu.
41:45The people of Toyotomi were
41:48punished one after another.
41:51He didn't do anything useful.
41:53As a result, Sessai couldn't
41:56leave the Imagawa family.
41:59What do you think was the biggest miscalculation?
42:03Yoshimoto and Ujizane
42:06were not able to grow up
42:09as representatives of the Sengoku period.
42:12The reason for that was that
42:15Yoshimoto and Ujizane did everything
42:18to prevent their growth.
42:20Contrary to that,
42:23Sessai taught Ieyasu
42:26everything he could.
42:29Unfortunately,
42:32Ieyasu's death
42:35destroyed the Imagawa family.
42:38Let's take a look at
42:41the lessons we can learn
42:44from Sessai's defeat.
42:47Don't do everything yourself.
42:50It's a common mistake.
42:53When you see your subordinates
42:56doing something wrong,
42:59you think it's too early to do it.
43:02I used to like doing things
43:05by myself.
43:08I couldn't leave it to someone else.
43:11People like Sessai
43:14do everything by themselves.
43:17That's why
43:20I don't want to do everything by myself.
43:23I want to leave it to someone else.
43:26I want to be patient no matter how bad I am.
43:29If you do everything
43:32by yourself,
43:35you will prevent your subordinates' growth.
43:38The ideal is to create
43:41an organization that works without you.
43:44This is the lesson we can learn
43:47from Sessai's defeat.
43:50Ieyasu's death
43:56I've heard that
43:59a good player can't always be a good coach.
44:02In that sense,
44:05Sessai is famous
44:08as a teacher of Yoshimoto.
44:11I don't know if he was a good teacher.
44:14It's a difficult question.
44:17Ieyasu was a good student
44:20but he wasn't a good coach.
44:23I think it was because
44:26his subordinates were compatible with him.
44:29It's ironic that
44:32Ieyasu, who was raised by Sessai,
44:35was able to realize the Tenka Seishitsu.
44:38But Sessai was a very good player
44:41and Ieyasu was the one who suffered.
44:44Thank you, Mr. Saito.
44:50This is the lesson we can learn from
44:53Sessai's defeat.