Editing Sengoku period (section)

==== Puppetization of the Ashikaga Shogunate by the Hosokawa clan ====
[[File:Hosokawa Masamoto.jpg|thumb|[[Hosokawa Masamoto]]]]
[[Ashikaga Yoshihisa]], who had become the ninth shogun during the Onin War, died at the age of 25, and Ashikaga Yoshitane became the 10th shogun. However, in 1493, Hosokawa Masamoto raised an army while shogun Yoshitane was away in Kyoto and installed the 11th shogun, Ashikaga Yoshizumi, in a de facto coup known as the {{nihongo|[[Meio]] incident|[[:ja:明応の政変|明応の政変]]|}}. Masamoto held the position of {{nihongo3||管領|[[Kanrei]]}}, second only to the shogun in the Ashikaga shogunate, and the equivalent of {{nihongo3||執権|[[Shikken]]}} in the Kamakura shogunate. This made the shogun a puppet of the [[Hosokawa clan]], which served as the ''Kanrei''. In recent years, it has been theorized that this incident marked the beginning of the Sengoku period.<ref name="meio">{{cite web|url=https://www.touken-world.jp/history/history-important-word/meio-no-seihen/|archive-url=|script-title=ja:明応の政変|language=ja|publisher=The Nagoya Japanese Sword Museum Nagoya Touken World|date=|archive-date=|access-date=29 March 2024}}</ref><ref name="kotomei">{{cite web|url=https://kotobank.jp/word/%E6%98%8E%E5%BF%9C%E3%81%AE%E6%94%BF%E5%A4%89-1830908|archive-url=https://web.archive.org/web/20240328215137/https://kotobank.jp/word/%E6%98%8E%E5%BF%9C%E3%81%AE%E6%94%BF%E5%A4%89-1830908|script-title=ja:明応の政変|language=ja|publisher=Kotobank|date=|archive-date=28 March 2024|access-date=28 March 2024}}</ref>

Hosokawa Masamoto remained a bachelor for the rest of his life and adopted three people as his heirs. Following the advice of his vassals, Masamoto named [[Hosokawa Sumimoto]] as his successor instead of [[:ja:細川澄之|Hosokawa Sumiyuki]], who had been adopted first. As a result, Masamoto was killed by Sumiyuki in 1507. This incident is called {{nihongo3|[[Eishō (Muromachi period)|Eishō]] delirium|[[:ja:永正の錯乱|永正の錯乱]]|Eishō no sakuran}}. This triggered a struggle for the succession of the Hosokawa clan, which was divided into the Hosokawa Sumimoto faction and the [[Hosokawa Takakuni]] faction, and started a war called {{nihongo3|Ryō Hosokawa War|[[:ja:永正の錯乱#両細川の乱|両細川の乱]]|}}, which was won by Hosokawa Takakuni.<ref name="omono">{{cite web|url=https://www.touken-world.jp/tips/11089/|archive-url=https://web.archive.org/web/20220929125449/https://www.touken-world.jp/tips/11089/|script-title=ja:大物崩れ|language=ja|publisher=The Nagoya Japanese Sword Museum Nagoya Touken World|date=|archive-date=29 September 2022|access-date=29 March 2024}}</ref>

Hosokawa Takakuni installed [[Ashikaga Yoshiharu]] as the 12th shogun. Meanwhile, [[Hosokawa Harumoto]], son of Hosokawa Sumimoto, who had lost the war, collaborated with [[:ja:三好元長|Miyoshi Motonaga]] to defeat Takakuni at the {{nihongo3|Battle of Katsuragawa|[[:ja:桂川の戦い|桂川の戦い]]|}} in 1527 and expel him from Kyoto. The authority of the ''Kanrei'' was thus destroyed, and with almost no support for Hosokawa Takakuni, he was forced to move from place to place. He gained the ''sengoku daimyo'' [[:ja:浦上村宗|Uragami Muramune]] as an ally and fought Hosokawa Harumoto in a war called {{nihongo3||[[:ja:大物崩れ|大物崩れ]]|Daimotsu kuzure}} in 1531, but was defeated.<ref name="omono"/>

Hosokawa Harumoto seized power, but he alienated Miyoshi Motonaga, who was his retainer but still held a strong position of power. Harumoto seduced the [[Ikkō-shū]] into a ''[[Ikkō-ikki]]'' against Motonaga, which resulted in Motonaga's death in 1532.<ref name="omono"/>