Chris Perry, Author

Tag: Miyoshi Clan

  • (No longer) Lords of the Four Provinces

    (No longer) Lords of the Four Provinces

    Last time, we looked at how the Chosokabe rose from barely holding a single castle to becoming effective masters of the whole of Shikoku. In 1582, it had looked like they were about to be invaded and (probably) conquered by Oda Nobunaga, but his sudden death at the Honnoji Incident in June 1582 granted the Chosokabe a brief reprieve.

    The mon of the Chosokabe Clan.
    百楽兎 – 投稿者自身による著作物, CC 表示-継承 3.0, https://commons.wikimedia.org/w/index.php?curid=9987939による

    Between 1582 and 1585, they completed their conquest of Shikoku, although exactly how much control they really exerted is still debated by historians, with some suggesting that Shikoku was conquered and pacified, but others making the case that Chosokabe control outside of Tosa Province was tenuous.

    Regardless of the nature of Chosokabe’s control of Shikoku, it would prove to be brief. In the spring of 1585, Hashiba Hideyoshi, fresh from defeating the last of his rivals to the mantle of Nobunaga’s successor, turned his attention to Shikoku. Hideyoshi ordered the Chosokabe to hand over Iyo and Sanuki Provinces, effectively ceding the northern half of Shikoku to him.

    Toyotomi Hideyoshi, who would eventually become master of Japan.

    The Lord of the Chosokabe, Motochika, tried to negotiate, offering just Iyo Province. Hideyoshi was not a man to be bargained with, however, and in response to what he saw as Chosokabe’s defiance, he dispatched an army of some 100,000 men under the overall command of his brother, Hidenaga.

    Shikoku was attacked from three sides: Sanuki and Awa by Hidenaga’s army, and Iyo by the Mori who had recently submitted to Hideyoshi and were keen for a chance to prove their loyalty. Attacked on multiple fronts and facing overwhelming numbers, the Chosokabe did not resist for long. At the end of July, after already having lost Awa Province, Motochika surrendered.

    The terms were harsh, but not as bad as they might have been. Hideyoshi allowed the Chosokabe to keep control of Tosa Province, but the other three were divided amongst Hideyoshi’s vassals. In 1586, the Chosokabe would join Hideyoshi’s invasion of Kyushu, and though the campaign itself would be successful, Motochika’s heir, Nobuchika, was killed in battle.

    Overcome with grief, Motochika is supposed to have tried to kill himself, only being dissuaded at the last minute by his vassals. Not long after this, he relocated the base of the clan to what is now Kochi Castle, and in 1588, he named his fourth son, Morichika, as the new heir.

    Kochi Castle as it appears today.
    By Taisyo – photo taken by Taisyo, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=2157936

    In 1590, the Chosokabe again went to war in the service of Hideyoshi, this time dispatching naval forces to attack the Hojo Castle at Shimoda with 10,000 men. The garrison of 500 held out for nearly two months, but it was eventually taken, and with it, the Chosokabe contribution to the wider Odawara Campaign came to an end.

    In 1591, Motochika moved his base from Kochi Castle to a position at Urado (still within the modern city of Kochi). Some sources say this was because of the unfavourable location of the first castle (it was prone to flooding), whilst others suggest it was a strategic move, with Urado serving as the main base of the Chosokabe Navy, which took part in Hideyoshi’s long and ultimately unsuccessful invasions of Korea from 1592-1598.

    In 1596, the San Felipe Incident occurred when a Spanish Galleon (the San Felipe, hence the name) was shipwrecked off the coast of Tosa and brought into the harbour at Urado. We’ll focus on this incident specifically in a later post, but the short version is that Motochika confiscated the remaining cargo of the Galleon, and when officials from Hideyoshi arrived in Kochi to take possession of the goods, the captain of the Galleon heavily implied that the presence of Christians in Japan was the precursor to a Spanish Invasion, explaining that that was how the Spanish had managed to conquer such a large part of the globe.

    Hideyoshi had initially issued orders expelling Christian priests from Japan in 1586, but it had been unenforced before now. When news of the supposed Spanish invasion reached him, Hideyoshi was horrified, and in 1597, he had 26 Christians (including one passenger from the San Felipe) marched from Kyoto to Nagasaki (the centre of Christianity in Japan) and had all 26 crucified on a hill overlooking the city.

    A 19th Century depiction of the executions. The Japanese are wrongly portrayed with Chinese clothing and weapons.

    Motochika’s role in the persecution that followed is not clear, though Christianity had never been particularly strong on Shikoku, as the Chosokabe were largely opposed to foreigners in Japan, so it’s not hard to imagine he would have had no qualms about expelling them from his territory, even if he was not actively involved in the wider campaign.

    Hideyoshi’s death in 1598 would threaten the fragile peace he had forged, as his son and heir was just a boy, and a council of five regents was appointed to rule in his stead. Though Motochika was not a member of the council, he was still a man of influence, and in 1599, he was in Kyoto for an audience with Toyotomi Hideyori (Hideyoshi’s son) when he fell seriously ill.

    When it became clear that he wasn’t going to get better, he made his will, leaving control of the Chosokabe to his son Morichika, before he passed away in May that year. Morichika’s accession was far from smooth; he was unpopular amongst some of the Chosokabe’s retainers (apparently due to his arrogance and short temper), and the Toyotomi, de facto masters of Japan, didn’t recognise him as the new head of the clan.

    An early 20th century depiction of Chosokabe Morichika.

    Morichika would try to make good on his appointment by joining the Western Army (the pro-Toyotomi side) at the Battle of Sekigahara in 1600. This would prove to be an unwise choice in the end, as the Western Army was defeated by the Eastern Army under Tokugawa Ieyasu. Although the Chosokabe had not actually been involved in the final battle, they had chosen a side and would not escape the consequences.

    Morichika was punished by having Tosa taken from him. Though there would be some protest, the decision proved to be final, and the Chosokabe’s time as feudal lords was over. Motochika would campaign to have his territory restored until around 1605. In 1610, he supposedly became a monk, and although his movements around this time are unclear, by 1612, he was under direct surveillance from the new Tokugawa Shogunate.

    The new Shogun was right to suspect him, as, during the Osaka Campaign in 1615, he sided with the Toyotomi, hoping to secure the restoration of Chosokabe lands in Tosa. In the event, the Tokugawa would be victorious in that campaign, snuffing out the last of the Toyotomi Clan, and securing their rule.

    A contemporary kawaraban, a kind of early newspaper, depicting the fall of Osaka Castle.

    Morichika is reported to have fought bravely, leading an attack on the Tokugawa’s main camp that was ultimately unsuccessful, but which managed to inflict serious casualties on the Tokugawa army before being forced to withdraw. With Osaka Castle eventually falling to the Tokugawa, Morichika initially fled, but he was discovered and then humiliated by being paraded around Kyoto before being beheaded.

    Morichika’s death brought an end to the Chosokabe. Some sources state he had as many as five sons, all of whom died premature and violent deaths. Some other sources, however, suggest that he had just two children, a girl and a boy, one who married a local retainer, and the other who was whisked away after the Siege of Osaka and raised elsewhere. Unfortunately, in both cases, reliable sources are hard to come by, and the truth appears to be that the Chosokabe died with Morichika.

    The Chosokabe name would be revived in later years by descendants of Motochika’s brother, Chikafusa, who had been adopted into the Shima Clan years earlier and thus survived the end of the Chosokabe. The family survived in this form until March 2025, when the last head of the family, Chosokabe Tomochika, passed away childless, aged 82.

    「今は個人の時代。家を背負う時代ではありません。逆にこれからの世代が、自分の思いで新しい歴史を作っていくのも立派なことじゃないかと思いますね」

    “We are now in the age of the individual. It is no longer the age to shoulder the burden of a family. On the contrary, I think it is admirable for future generations to create a new history based on their own ideas.” – Chosokabe Tomochika

    Sources
    https://ja.wikipedia.org/wiki/%E9%95%B7%E5%AE%97%E6%88%91%E9%83%A8%E7%9B%9B%E8%A6%AA
    https://ja.wikipedia.org/wiki/%E5%85%AD%E6%9D%A1%E6%B2%B3%E5%8E%9F
    https://ja.wikipedia.org/wiki/%E9%95%B7%E5%AE%97%E6%88%91%E9%83%A8%E5%85%83%E8%A6%AA
    https://en.wikipedia.org/wiki/Ch%C5%8Dsokabe_Morichika
    https://ja.wikipedia.org/wiki/%E3%82%B5%E3%83%B3%EF%BC%9D%E3%83%95%E3%82%A7%E3%83%AA%E3%83%9A%E5%8F%B7%E4%BA%8B%E4%BB%B6
    https://ja.wikipedia.org/wiki/%E4%B8%8B%E7%94%B0%E5%9F%8E_(%E4%BC%8A%E8%B1%86%E5%9B%BD)
    https://en.wikipedia.org/wiki/San_Felipe_incident_(1596)
    https://ja.wikipedia.org/wiki/%E9%95%B7%E5%AE%97%E6%88%91%E9%83%A8%E6%B0%8F
    https://ja.wikipedia.org/wiki/%E9%95%B7%E5%AE%97%E6%88%91%E9%83%A8%E5%8F%8B%E8%A6%AA
    https://croissant-online.jp/life/54209/

  • The Hosokawa Rebellion

    The Hosokawa Rebellion

    As we’ve looked at previously, internal clan conflict wasn’t uncommon during the 15th century; in fact, it had gotten to the point that violent succession struggles were almost a fact of life. One exception to this rule had been the Hosokawa Clan.

    In the mid-15th Century, the Hosokawa were just one of several powerful clans that dominated the area around Kyoto, the centre of political power in the realm. While other clans had risen and fallen throughout the Century, the Hosokawa went from strength to strength, in large part because they managed to maintain a stable succession, leading to one of their number, Hosokawa Masatomo, being strong enough to launch the Meio Coup in 1493, giving him effectively complete control of the government and what was left of its prestige.

    Hosokawa Masatomo, who arguably led his clan to the height of its power, and laid the groundwork for its downfall.

    The relative stability of the Hosokawa Clan came to an end with Masatomo, however. He had succeeded his father largely because he had been the only viable candidate and had earned the support of his clan’s vassals after his father’s death. Masatomo apparently didn’t learn from this, however. Firstly, his spiritual beliefs meant that he swore off contact with women, which rather limited his opportunities to father an heir.

    This was no problem, though; adoption was(and continues to be) a widely accepted custom amongst the rich and powerful in Japan, and all Masatomo had to do was select a candidate who could earn the support of the wider Hosokawa Clan, and their position would be (relatively) secure.

    It must have come as quite a shock then, when Masatomo adopted not one, but three sons. To be fair, he didn’t adopt them all at once, and most contemporary sources speculate that his intentions were to split the Hosokawa lands between his new heirs, but you won’t be surprised to learn that it didn’t work out that way.

    No sooner was the ink dry on the adoption documents than rival factions began to form around the three potential heirs. Masatomo didn’t help matters by clearly favouring one son, Sumitomo, over the other two, but the whole situation would have been precarious even under the best of circumstances, and the Hosokawa certainly didn’t enjoy those.

    Hosokawa Sumitomo, Masatomo’s apparently preferred heir.

    We’ve looked at the wide-ranging political problems the Shogunate faced during the latter half of the 15th century, and when Masatomo seized control of the government, he also inherited those problems. It’s hard to see how even the most focused, capable, and diplomatic leader might have reversed the situation the Shogunate found itself in, and unfortunately for the Hosokawa, Masatomo was an eccentric iconoclast, prone to doing things like attempting to fly, deriding long-standing ceremonies, and generally making political enemies wherever he went.

    It is a strange quirk of human history, though, that factions who seem to have hostile (and often violent) intentions towards each other will exist in a kind of tense equilibrium as long as there is someone, or something, that they can focus their ire on. In the early 16th century, that someone was Masatomo.

    None of the three factions was strong enough to openly oppose him, because if they had, they’d have been attacked and wiped out by the other two, who would need little encouragement to remove a rival, even if that meant supporting Masatomo in the short term.

    It is also true that, eventually, the dam always breaks, and when it comes to court politics, that usually means blood. In June 1507, supporters of one of Masatomo’s adopted sons (Sumiyuki) assassinated him in his bathhouse. The next day, they attempted to do the same thing to another son, Sumitomo, but he managed to escape with the help of his allies in the Miyoshi Clan.

    Just a moment ago, I mentioned that one faction couldn’t make a move without antagonising the other three, and that’s exactly what happened. Sumiyuki’s supporters had tried to remove Sumitomo and failed. Now, Sumitomo fled Kyoto and sought the aid of the third brother, Takakuni, who was only too happy to oblige.

    The stylised end of Hosokawa Sumiyuki.
    Musuketeer.3 – 投稿者自身による著作物, CC 表示-継承 3.0, https://commons.wikimedia.org/w/index.php?curid=24893374による

    The combined forces of Takakuni and Sumitomo were indeed too much for Sumiyuki, and by August, he had been defeated and forced to commit suicide. The question then was who would actually succeed Masatomo. Both Takakuni and Sumitomo could arguably claim to have avenged their adopted father’s death, and both had significant support from the remaining Hosokawa retainers.

    As we mentioned last time, it is at this point that the previously deposed Shogun, Yoshitane, returned to the scene. Given that Masatomo had overthrown him in a coup and installed a puppet, it wasn’t difficult to convince Shogunate loyalists to side with Yoshitane. Suddenly, becoming heir to the Hosokawa Clan wasn’t quite the prize it had been. Though Sumitomo was in the stronger position, he now faced a resurgent Yoshitane, and his brother, Takakuni, saw the way the wind was blowing and threw in his lot with the returning Shogun as well.

    Just as Sumiyuki had been unable to oppose the combined forces of his brothers, Sumitomo did not have the strength to challenge the Shogun and Takakuni. Sumitomo also lost considerable support due to the actions of his supporters in the Miyoshi Clan, who had become overbearing in the short period after their victory.

    So, in April 1508, when Yoshitane and Takakuni marched on Kyoto, Sumitomo and the Miyoshi had little choice but to flee with their puppet Shogun, Yoshizumi. Shortly after this, Yoshitane was reinstated as Shogun, and Takakuni was named the new head of the Hosokawa Clan.

    The once and future Shogun, Yoshitane, picked the right moment to return to the political scene.

    In June the following year, Sumitomo and the Miyoshi attempted to retake the city but were defeated and driven back; however, a counterattack led by Yoshitane was similarly defeated. The back-and-forth nature of the conflict continued until the Battle of Ashiyagawara (sometimes called the Siege of Takao Castle), in the summer of 1511, after which Sumitomo’s victorious forces were able to briefly reoccupy Kyoto.

    ‘Briefly’ is the operative word here, because in September of the same year, Takakuni and Yoshitane’s forces counterattacked, retook Kyoto, and drove Sumitomo and the Miyoshi back to their strongholds in Awa Province, across the Inland Sea on Shikoku.

    Awa Province.
    By Ash_Crow – Own work, based on Image:Provinces of Japan.svg, CC BY 2.5, https://commons.wikimedia.org/w/index.php?curid=1652119

    Around this time, Yoshizumi died of illness, and Sumitomo suffered a serious loss of support. Many of his allies had supported Yoshizumi as Shogun, and Sumitomo as his champion, but now Yoshizumi was gone, Yoshitane, who was now firmly entrenched in Kyoto, was the only remaining claimant to the title, and many Shogunate loyalists deserted to him, weakening Sumitomo and strengthening Takakuni.

    Ashikaga Yoshizumi, whose death proved that a puppet shogun is better than no Shogun at all.

    This stalemate did not mean peace, however, and constant, low-level fighting would continue throughout the region and the wider realm; what would later be called the Sengoku Jidai was already well underway, even if the area immediately around Kyoto was relatively quiet.

    In 1517, the stalemate was broken when Miyoshi forces in support of Sumitomo invaded Awaji and used it as a springboard to threaten the mainland. Around this time, the Ouchi Clan, who had supported Takakuni and Yoshitane for the better part of 10 years, left the capital to deal with unrest in their home provinces, caused by the apparent resurgence of Sumitomo and the Miyoshi’s faction.

    The departure of the Ouchi was a major blow to Takakuni, and over the next two years, he saw his position gradually chipped away, as forces defected to Sumitomo or simply abandoned the fight to deal with their own affairs. Finally, in early 1520, Shogun Yoshitane himself switched sides, throwing his support behind Sumitomo and forcing Takakuni to flee Kyoto.

    Ouchi Yoshioki, the head of the Ouchi Clan, whose decision to leave Kyoto seriously weakened Takakuni.

    Takakuni fled to Omi Province, but he wasn’t ready to roll over just yet. Gathering a force of his allies, he counter-attacked in May 1520 and retook the capital. This time, his victory was decisive; he forced the leader of the Miyoshi Clan to commit suicide and even managed to drive Sumitomo back into exile on Shikoku, where he died of illness shortly afterwards.

    The following year, Takakuni exiled the fickle Yoshitane and installed Ashikaga Yoshiharu, the son of Yoshizumi, as Shogun, though he was just as much a puppet ruler as his father had been. Takakuni was appointed kanrei (deputy) for the new Shogun’s enthronement ceremony, but would resign the position immediately afterwards, proving to be the last man to hold the position, according to historical records.

    It wouldn’t be until October 1524 that the last embers of Miyoshi resistance were stamped out on Shikoku, but even then, Takakuni was far from secure in his position. In 1526, he faced serious opposition from within his own clan and was defeated when he tried to march against them. In 1527, this combined force actually managed to drive Takakuni out of Kyoto, and an attempted counterattack was defeated at the Battle of Katsuragawa in March that year.

    Takakuni, ever tenacious, refused to give up, despite being defeated in 1528 and again in 1530. Things finally came to a head for him in 1531, at the Battle of Tennoji, which is often called the Daimotsu Kuzure, which can be translated as “The Fall of the Big Shots” (lit. big names fall, or collapse).

    The Battlefield Memorial of the Fall of the Big Shots.

    Takakuni was defeated. He survived the battle but was captured shortly afterwards, supposedly whilst hiding in an indigo storage barrel at a dye shop, after which he was obliged to commit suicide. Several of his main supporters (the eponymous “Big Names”) suffered similar fates, and Takakuni’s faction disintegrated.

    Takakuni’s body was likely still warm (and probably blue, given his hiding place) when the forces that had opposed him turned on each other. Members of the Hosokawa, Hatakeyama, and Miyoshi Clans all began fighting, and any hope of retaining a stable government in Kyoto was lost.

    Sources
    https://ja.wikipedia.org/wiki/%E6%B0%B8%E6%AD%A3%E3%81%AE%E9%8C%AF%E4%B9%B1
    https://ja.wikipedia.org/wiki/%E5%A4%A7%E7%89%A9%E5%B4%A9%E3%82%8C
    https://ja.wikipedia.org/wiki/%E6%A1%82%E5%B7%9D%E5%8E%9F%E3%81%AE%E6%88%A6%E3%81%84
    https://ja.wikipedia.org/wiki/%E8%B6%B3%E5%88%A9%E7%BE%A9%E6%99%B4
    https://ja.wikipedia.org/wiki/%E7%AD%89%E6%8C%81%E9%99%A2%E3%81%AE%E6%88%A6%E3%81%84
    https://ja.wikipedia.org/wiki/%E8%8A%A6%E5%B1%8B%E6%B2%B3%E5%8E%9F%E3%81%AE%E5%90%88%E6%88%A6
    https://ja.wikipedia.org/wiki/%E8%88%B9%E5%B2%A1%E5%B1%B1%E5%90%88%E6%88%A6
    https://ja.wikipedia.org/wiki/%E4%B8%8B%E7%94%B0%E4%B8%AD%E5%9F%8E
    https://ja.wikipedia.org/wiki/%E8%B6%B3%E5%88%A9%E7%BE%A9%E6%BE%84
    https://ja.wikipedia.org/wiki/%E5%A4%A7%E5%86%85%E7%BE%A9%E8%88%88

  • The Eisho Disturbance

    The Eisho Disturbance

    Last time, we looked at the Meio Coup that saw the Shogun’s kanrei (deputy), Hosokawa Masatomo, take over the government and install a puppet Shogun with himself in effective control. At the end of that post, we also looked at how, despite the coup’s success, Masatomo’s grip on power was far from secure.

    Hosokawa Masatomo, the most powerful man in the realm following the Meio Coup.

    As soon as the dust settled, Masatomo found himself surrounded by problems. Some had been long-standing, violence between powerful clans in the provinces had been a problem for decades, and Shogunate authority outside of Kyoto was tenuous at best.

    Within Kyoto, too, there were enduring rivalries between different factions, sometimes within the same family, all revolving, as it always had, over who would control the throne, or the man (it was always a man) sitting on it. In many ways, Masatomo’s coup can be seen as a continuation of political instability that went back centuries. As long as there had been an Imperial Throne (nearly a thousand years at this point), there had been powerful families vying to control it. That situation hadn’t really changed when the centre of power became the Shogun instead of the Emperor.

    Some of the problems were of Masatomo’s own making, though. He was, but most contemporary accounts describe him as an authoritarian and quite eccentric character. It is easy for us to imagine the Shogun as some all-powerful ruler, but the reality was that there was a considerable amount of power sharing in the capital. This was no democracy, but it was also expected that the powerful clans surrounding the throne would be consulted about government matters and have their seat at the table when it came to running things.

    There had been several examples of powerful families coming to dominate the government, and again, Masatomo was just continuing that trend, but like the families who came before him, centralising all power in one man attracted a lot of hostility from the other clans who now found themselves frozen out.

    The other problem with Masatomo was that he was something of an eccentric iconoclast. A follower of the ascetic Shugendo sect of Buddhism, he lived an austere life, swearing off certain foods, all alcohol and the company of women, though some contemporary sources suggest his aversion to sex wasn’t limited to his male companions, and he was apparently a practitioner of shudo, a kind of ritualised homosexuality that was common amongst Samurai.

    Modern day practitioners of Shugendo, of which Masatomo was a keen adherent.
    By 唐山健志郎 (Kenshiro Karayama) – 唐山健志郎 (Kenshiro Karayama), CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=2259089

    Masatomo is supposed to have believed that his religious fervour would allow him to engage in magical feats, such as being able to fly or speak mystical languages. He had more practical eccentricities as well; he would go on long journeys, sometimes alone, and without telling his retainers, meaning that government would effectively come to a halt until he could be found.

    Religious and sexual habits aside, Masatomo also opposed much of the pomp and ceremony surrounding the institutions of government. It is said that he disliked the formal clothing required at certain ceremonies, and the official enthronement of the new Shogun was delayed simply because Masatomo refused to wear the eboshi hat required by tradition.

    A 17th Century depiction of an official wearing the eboshi hat that Masatomo despised.

    Masatomo also had a shockingly (for the time) rational approach to the Imperial Court as well. He is supposed to have opposed the enthronement ceremony of Emperor Go-Kashiwabara on the grounds that, since the Emperor no longer had any real power, there was no point in a grand ceremony. This was technically true, but flew in the face of long-established tradition.

    So a combination of Shogunate weakness, Political problems, and personality issues meant that Masatomo’s position was never strong, and he wouldn’t help matters with some of the decisions he made. Given Masatomo’s apparent aversion to women, he wasn’t able to produce an heir (obviously). This problem wasn’t an uncommon one at the time, and adoption was usually the preferred solution.

    Masatomo, never one to do anything the easy way, adopted three sons, Sumimoto, Sumiyuki, and Takakuni. You may remember, in the period leading up to and including the Onin War, one of the key factors in the instability that gripped the realm was the frequency of internal conflict over clan succession. One of the reasons the Hosokawa Clan had been able to take such a strong position was that they had largely been able to avoid these struggles, with Masatomo succeeding his father relatively smoothly.

    Some contemporary sources suggest that Masatomo’s ultimate plan was to divide the Hosokawa lands between two of these sons, while the third would inherit the position of kanrei and thus real political power. Initially, it seems that Masatomo favoured Sumimoto to succeed him as kanrei, but the fact that all three ‘sons’ came from three different families meant that the succession was now the subject of growing factional rivalries.

    Hosokawa Sumitomo, Masatomo’s choice as heir.

    This situation was precarious, but held together by the sheer force of Masatomo’s will. With power centralised in his hands, he could exert enormous control over what remained of the Shogunate government and its nominal loyalists. This way of doing things required him to be alive, however, which he no longer was after June 23rd, 1507, when he was assassinated.

    The assassins were apparently partisans of Sumiyuki, favouring him as kanrei over Sumitomo, who they also attacked at the same time as his father, though Sumitomo was able to escape with the help of his supporters, led by members of the Miyoshi Clan (a name that will become important later).

    The fact that Sumitomo survived was a problem for Sumiyuki, especially after he fled to Takakuni, the third brother, who agreed to support him and march against Sumiyuki. There was a series of blood battles between the rival factions until Sumitomo’s supporters, led by Miyoshi Yukinaga, took his final refuge at Yushoken, forcing Sumiyuki to commit suicide.

    An image depicting Sumiyaki at the moment of his death.
    Musuketeer.3 – 投稿者自身による著作物, CC 表示-継承 3.0, https://commons.wikimedia.org/w/index.php?curid=24893374による

    It turns out that your enemy’s enemy isn’t always your friend, though, and it wasn’t long before Takakuni and Sumitomo were at each other’s throats. The problem stemmed from Sumitomo’s supporters amongst the Miyoshi Clan, whose strength and growing overbearingness earned them many jealous rivals. Then, in late 1507, former Shogun Yoshitane (who had fled after the Meio Coup) returned to the scene.

    Yoshitane, after fleeing into exile, had been supported by the Ouchi Clan based in modern-day Yamaguchi Prefecture, and now they raised their banners in support of his march on Kyoto. Although not strong enough to take the city at first, shortly after the new year, Takakuni became the focal point for anti-Miyoshi feeling and chose to throw in his lot with the old Shogun.

    This combined force attacked Kyoto and took the city in early April, forcing Sumitomo and Shogun Yoshizumi to flee. Takakuni was recognised as the new head of the Hosokawa Clan, and Yoshitane was reinstated as Shogun, beginning his second reign.

    Sumitomo and Yoshizumi were down but not out, however, and what followed was more than 20 years of strife that is collectively called the Hosokawa Civil War, or Hosokawa Rebellion. This conflict had all the hallmarks of the internal violence that had wracked multiple clans throughout this period, but wrought on a massive scale, involving not just the Hosokawa but their vassals, retainers, and the Shogunate itself.

    Sources
    https://ja.wikipedia.org/wiki/%E6%B0%B8%E6%AD%A3%E3%81%AE%E9%8C%AF%E4%B9%B1
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