Write a realistic, plausible alternate history scenario in the form of a history book chapter completely set in the world of the alternate history scenario with absolutely no references to real life, OTL or that this is even an alternate history timeline at all,  explaining in detail the victory of the Japanese in the Imjin Wars of May 23, 1592 – December 16, 1598 launched [the Imjin Wars] by the hereditary military dictatorship of the side branch of the post-660 BC Japanese reigning imperial family, the supposedly Shinto-pantheon descended, Japanese Imperial House of Great Yamato/Minamoto dynasty that was also a Japanese noble clan and samurai clan of the Ashikaga clan-ruled Ashikaga bakufu [tent government |bakufu|], [the bakufu] popularly [the bakufu] known as [the bakufu’s more popular name] the shogunate, [the bakufu] a system of government in Japan dominated [the bakufu] by a feudal military dictatorship exercised in the name of a sei-i taishōgun [“Commander-in-Chief of the Expeditionary Force Against the Barbarians” |sei-i taishōgun|, the military rulers of Japan |the sei-i taishōgun| during most of the period spanning from 1185 to 1868 in Japanese history who |the sei-i taishōgun| carried out |the sei-i taishōgun| the actual duties of administration in Japan during that time period who |the sei-i taishōgun| also |the sei-i taishōgun| enjoyed civil, military, diplomatic and judicial authority within Japan], [the sei-i taishōgun] more popularly known as [the sei-i taishōgun’s more famous name] a shogun or by the shogun himself, with the hierarchy that held the bakufu together being [the hierarchy holding the bakufu] reinforced [the hierarchy holding the bakufu] by [what reinforced the hierarchy holding the bakufu together] close ties of loyalty between the collection of various powers that supported the bakufu and the hereditary military nobility and officer caste of medieval and early-modern Japan from the late 12th century until their abolition in the late 1870s with high prestige and special privileges, the buke [military families |buke|], [the buke] better known [the buke] outside of Japan and East Asia as [the buke’s other, more famous name] the samurai, the powerful Japanese magnates, and feudal lords who, from the 10th century to the early Meiji period in the middle 19th century ruled most of Japan from their vast, hereditary land holdings despite being subordinate to the shogun/sei-i taishōgun and nominally to the clan head of the main branch of the Imperial House of Great Yamato reigning over Japan as Emperor of Empress of Japan, whom the buke/samurai served as well-paid retainers, the daimyō [large private land |daimyō] that was de-facto lead by Toyotomi Hideyoshi as Chancellor of the Realm, the highest organ of the feudal Japanese government under the various bakufu ruling over Japan since the 12th century, the Great Council of State which handled all secular administrative affairs of Japan, while the Department of Worship, oversaw all matters regarding Shintō ritual, clergy, and shrines who [the Chancellor of the Realm] controlled the officers of the state, as well as four great councillors and three minor councillors, who then  turn controlled other elements of the feudal Japanese government, [Hideyoshi being the then Japanese Chancellor of the Realm] along with being the then chief advisor for the then clan head of the main branch of the Imperial House of Great Yamato ruling over feudal Japan as Emperor of Japan, but was in practice the title of both first secretary and regent who assisted an adult Emperor of Japan, whose duties were  were to convey to the Emperor the policies formulated by the Great Council of State and to convey the Emperor's decisions to them, [the Ashikaga bakufu then under the control of Hideyoshi as Chancellor of the Realm and Chief Advisor of the Japanese Emperor], with Ashikaga Yoshiaki as the then nominal sei-i taishōgun/shogun-ruled feudal Japan against the post-1392, pre-1838 satelite state and tributary kingdom of the absolute royal dynastic monarchy of Great Joeson ruled by the partially Han Chinese Korean House of Jeonju Yi in the entire Korean peninsula, [Great Joeson] then [Great Joeson] ruled by [the reigning monarch of Great Joeson during the Imjin Wars]  Yi Yeon, who [Yeon] had the combined regal and era name of Seonjo while [Yeon] ruling over Joeson and the state it [Great Joeson] was [Great Joeson] a vassal [Great Joeson] to, the crypto-Sunni Muslim Han Chinese Imperial House of Zhu-ruled pre-1662, post-1368, absolute dynastic Imperial royal monarchy of the Great Ming State/Great Ming Empire/"Ming dynasty" ruling over the eighteen provinces of the Han dynasty, Yunnan and Cantonia [Guangdong and Guangxi |Cantonia|] which [the Great Ming State] was [the Great Ming State] then [the Great Ming State] ruled by Zhu Yijun as the then-Emperor of the Great Ming State, [Yijun] having the combined era name of Wanli, [the Ashikaga clan-ruled Ashikaga bakufu in feudal Japan effectively ruled by Hideyoshi defeating the Imperial House of Zhu-ruled Great Ming State in China then ruled by the Wanli Emperor and the Royal House of Jeonju Yi-ruled Great Joeson State in Korea ruled by Seonjo in the Imjin Wars] unlike in OTL due to  the Great Joeson State's highest Goverment organ led by three officials known as the High State Councillors entrusted to deliberate over key problems of state, advising the king, and conveying royal decisions to the major executive bodies of the Great Joeson State's government, including ministries of Ijo [Personnel], Hojo [Taxation], Yejo [Rites], Beyongjo [Military Affairs], Hyeongjo [Punishments], and Gongjo [Public works], the Six Ministries, the State Council, [Joeson's State Council] being effectively useless, the decimation of the post-1392, pre-1898 ground combat force of the Great Joeson State consisting of the central army and the provincial armies, both made of peasant soldiers, cavalry, the shield-bearing foot soldiers known as pengbaesu  and the highest caliber of soldiers who served as elite foot soldiers and cavalry (or mounted infantry) known as the gabsa, archers, musketeers, and artillery with the King [of the Great Joeson State] appointing their generals, the Joeson Army and  the main naval force of Great Joeson, consisting of two types of main warships, the panokseon and the turtle ship and also utilizing small vessels and fishing boats for reconnaissance and landings, the Joeson Navy by Hideyoshi's well trained samurai troops and the supreme administrative organ established by the central government of Great Joeson, which allowed the allowed the higher military officers of the Joeson Army  to participate in the process of establishing security maneuvers to meticulously keep a keen eye on the issues of the border, the Border Defense Council of Joseon, [the Border Defense Council of Joseon] being caught defencelss by the Japanese invasion of Joeson, and Hideyoshi being more well-prepared and cunning in his plans of invading Joeson, with the goal of extending the full unification of Japan after the period in Japanese history in which civil wars and social upheavals took place almost continuously in the 15th and 16th centuries, known as the Sengoku Jidai [Warring States period], which [the Sengoku Jidai] truly started when the half-Chinese ethnic Korean military commander in feudal Japan's Kutara [Koryŏ/Goryeo] province in the entire Korean peninsula, Yi Seong-gye, [Seong-gye] overthrew the daimyō family of Kutara, the wan ouke [House of Wang] and [Yi Seong-gye] subsequently established Great Joeson as a Ming tributary state in 1392, [Yi Seong-gye] reigning over Joeson as its [Joeson's] first monarch under the combined regal and era name of Taejo from 5 August 1392 – 14 October 1398, [Hideyoshi planning to extend the unification of Japan after the Sengoku Jidai which started with Seong-gye overthrowing Kutara] and [Hideyoshi] avenge the humiliation brought upon Japan by the foundation of Joeson in Korea by Seong-gye, [Hideyoshi being more prepared to conquer Korea in order to avenge the formation of Joeson by Seong-gye] and the subsequent annexation of post-Imjin Wars Korea into Ashikaga bakufu-ruled feudal Japan as the Japanese province of Chōsen with Hideyoshi taking some of Seonjo's female descendants as his [Hideyoshi's] latest concubines after the Imjin Wars in this timeline and compliant members of Korea's indigenous slave-owning, sex-slave owning, China loving, resistant to change, Confucianist and neo-Confucianist aristocracy and nobility, the yangaban, [compliant members of the yangaban] along with compliant members of the Korean royal family [the House of Jeonju Yi] being [compliant members of the yangaban and the House of Jeonju Yi] married off [compliant members of the yangaban and the House of Jeonju Yi] into Japanese royalty, aristocracy and nobility after the Japanese victory in the Imjin Wars and the subsequent dissolution of Joeson and the annexation of post-Imjin Wars, post-Joeson Korea into Japan as Chōsen in this timeline with buke/samurai and daimyō from the Japanese Home Islands slowly replacing the yangaban and the now-dissolved Joeson's ground force in this timeline, the now-dissolved Joeson Army as the main aristocratic and military presence within post-Imjin Wars, post-Joeson Korea with anti-Japanese elements of the now-dissolved Joeson Army, the now-defunct Yangaban and the now defunct House of Jeonju Yi after its [post-Imjin Wars, post-Joeson Korea's in this timeline] annexation into Japan as Chōsen being [ anti-Japanese elements of the now-dissolved Joeson Army, the now-defunct Yangaban and the now defunct House of Jeonju Yi] hunted down and [ anti-Japanese elements of the now-dissolved Joeson Army, the now-defunct Yangaban and the now defunct House of Jeonju Yi in post-Imjin Wars, post-Joeson Korea] either killed, reeducated or [anti-Japanese elements of the now-dissolved Joeson Army, the now-defunct Yangaban and the now defunct House of Jeonju Yi in post-Imjin Wars, post-Joeson Korea into Japan] deported [anti-Japanese elements of the now-dissolved Joeson Army, the now-defunct Yangaban and the now defunct House of Jeonju Yi in post-Imjin Wars, post-Joeson Korea] to the Ming dynasty by the Japanese, who [the Japanese] then [the Japanese in this timeline] after [the Japanese in this timeline] liberating the mostly illiterate, uneducated, impoverished and starving Korean people from the yangaban and the useless Korean royals [the House of Jeonju Yi] due to [the Japanese in this timeline] winning the Imjin Wars in this timeline, [the Japanese in this timeline] undertake a comprehensive education, primitive industrial and religious reform system in the post-Imjin Wars, post-Joeson Korean peninsula, with schools being opened up for the common Korean people to get an education for themselves and their children and land reform in Korea being initiated by Hideyoshi by having seized yangban and House of Jeonju Yi estates go to ethnic Korean peasant farmers and ex-slaves within post-Imjin Wars, post-Joeson Korea in this timeline.

The Japanese victory is also due to the Joeson Navy, along with the Joeson Army and the units of the Ming dynasty’s post-1368, pre-1644 combined ground warfare force and naval combat division, the Great Ming Army and the imperial secret police that served the reigning members of the Imperial House of Zhu as Emperors of Han China that was also a imperial military body of the Great Ming State, with the authority to overrule judicial proceedings in prosecutions with full autonomy in arresting, interrogating and punishing anyone, including nobles and the emperor’s relatives along with the authority to overrule judicial proceedings in prosecutions with full autonomy in arresting, interrogating and punishing anyone, including nobles and the emperor’s relatives, and also to overrule judicial proceedings in prosecuting those deemed as enemies of the state, granted with full autonomy in arresting, interrogating, detaining them without trial and punishing them, without going through due process, whose members were bound to the reigning members of the Imperial House of Zhu as Emperors of Han China and took direct orders from them [the reigning members of the Imperial House of Zhu as Emperors of Han China], also serving as political commissary of the Great Ming State’s combined ground combat force and naval warfare force, the Great Ming Army in times of war, the Jǐnyīwèi [brocade-clothing guard/Embroidered Uniform Guard], sent in by the Great Ming State to help the Joeson Army and Navy fight off the Japanese during the Imjin War instead being decimated by Hideyoshi's trained and prepared samurai troops coming in from Japan and Okinawa and the Japanese also freeing  the majority Korean population of slaves that were enslaved by both the yangaban and the Royal House of Jeonju Yi during the Joeson period in Korea, having no rights, the nobi, along with the small Korean middle class from the yangaban and Royal House of Jeonju Yi along with [the Japanese]  the sex slaves and state prostitutes of both the yangaban and the members of the Royal House of Jeonju Yi during the Joeson era who were supposedly and legally trained to be courtesans, providing artistic entertainment and conversation to men of upper class, being the Great Joeson State's legal entertainers, required to perform various functions for the state, being carefully trained and frequently accomplished in the fine arts, poetry, and prose despite their real status as sex slaves, prostitutes along with simulataneously being concubines and unofficial second wives of the yangaban and the members of the Royal House of Jeonju Yi, with their roles including medical care and needlework, the kiseang/giseang, [Japan freeing the kiseang during the Imjin War] from the yangaban and the members of the Royal House of Jeonju Yi, [Japan while freeing the kiseang  during the Imjin War] integrating them [the giseang] into the Japanese system of female Japanese performing artists and entertainers trained in traditional Japanese performing arts styles, such as dance, music and singing, as well as being proficient conversationalists and hosts, the geisha.

The native Korean script for writing the Korean language, Hangul is [Hangul in this timeline] discovered [Hangul in this timeline] by the Japanese after the annexation of post-Imjin Wars, post-Joeson Korea into Japan and [Hangul in this timeline] subsequent spread and promoted as the way [Hangul in this timeline] to [Hangul in this timeline] write Korean by the Japanese in the timeline, who [the Japanese in this timeline] also promote the spread of the Japanese language and the heavily modified traditional Chinese characters used to write the Japanese language, Kanji, over the traditional Chinese characters used to write Korean utilized by the yangban and the House of Jeonju Yi, Hangul.

The Japanese in this timeline also [the Japanese in this timeline] promote the Japanese indigenous national religion and state religion of Shinto, Zen Buddhism and even Christianity over traditional Korean shamanism, Taoism and Confucianism and Neo-Confucianism in post-Imjin Wars, post-Joeson Korea as well in this timeline, with the liberated Korean masses flocking to these new religions [ Shinto, Zen Buddhism and Christianity] in droves.

The Japanese also [the Japanese in this timeline] begin a massive effort to [the Japanese in this timeline] absorb the Koreans into the Greater Japanese race and [the Japanese in this timeline] also integrate the Koreans into the Japanese political, social and economic systems, [the Japanese in this timeline] encouraging many Korean commoners in post-Imjin Wars, post-Joeson Korea to take Japanese names and let their children think of themselves as Japanese, speaking, writing and thinking in Japanese.

This is hugely successful and the Koreans are [the Koreans in this timeline] eventually assimilated [the Koreans in this timeline] into the Japanese nation as the centuries go by, mostly thinking, speaking and writing in Japanese by the 19th century, although a now heavily Japanese, Manchu/Manchurian and Chinese influenced Korean language still exists as a "dialect" of Japanese in this timeline, with Korea and the Koreans having roughly the same status as Okinawa and the Okinawans in both OTL Japan and this version of Japan in this timeline

Hideyoshi also [Hideyoshi] conquers Russia's Sakhalin and [Russia's] Kuril Islands in this timeline during and after the Imjin Wars in this timeline, which [Russia's Sakhalin and Kuril Islands in this timeline] become the Japanese province of Karufuto.

By the time Hideyoshi dies on September 18, 1598, with his [Hideyoshi's] nephew Toyotomi Hidetsugu succeeding him [Hideyoshi] as both Chief Advisor to the Japanese Emperor and Chancellor of the Realm and his [Hideyoshi's] young son Toyotomi Hideyori next in line to succeed both Hideyoshi and Hidetsugu as Chief Advisor to the Emperor and Chancellor of the Realm, with the then-clan head of the main branch of the Imperial House of Great Yamato reigning over Japan as its reigning imperial family reigning over Japan as its combined royal imperial dynastic head of state and chief priest of Shinto in the role of Japanese Emperor. Go-Yōzei using this as an excuse not to appoint another shogun until Tokugawa Ieyasu, the then head of the side branch of the main branch of the Imperial House of Great Yamato that was also a Japanese noble and samurai clan, the Tokugawa clan [Ieyasu] attempts to take control of Japan from Hidetsugu and nearly reopens the Sengoku period.

Go-Yōzei then appoints Ieyasu as shogun on March 24, 1603, causing the start of the Tokugawa clan-ruled feudal hereditary military dictatorship of the Tokugawa bakufu as the government of feudal Japan and forces Ieyasu not to break the arranged marriage between Hideyori and Ieyasu's granddaughter Senhime, with the intention of making their [Hideyori's and Senhime's] first male child into the next shogun after Ieyasu's son Tokugawa Hidetada and also with the intention of uniting the Toyotomis and Tokugawas into a single family, securing the line of shogunal succession and preventing any threats to the Japanese imperial family's [the main branch of the Imperial House of Great Yamato's] rule and authority over Japan. 

The indigenous Jurchen tribes of Manchuria still [the Jurchens in this timeline] emerge from Manchuria and [the Jurchen tribes of Manchuria] still conquer the Ming in a brutal campaign from 1644-1662, [the Jurchens] subsequently establishing the post-1662, pre-1912 Manchu Imperial House of Aisin Gioro-ruled, Manchu-dominated imperial absolute dynastic federalist royal monarchy of the Great Qing Empire ruling [the Great Qing Empire] over Han China, Guangdong, Guangxi, Yunnan, East Turkestan, Tibet, Inner and Outer Mongolia and Tuva from [the Great Qing Empire's stronghold] Inner and Outer Manchuria, but the Japanese are [the Japanese] the ones to [what the Japanese do in this timeline] conquer [what the Japanese conquer in this timeline] the partially Han Chinese, Sinified by heavy Ming influence side branch of the main branch of  Imperial House of Great Yamato/Minamoto dynasty, the Japanese-Han Chinese Royal House of Koxinga/Zheng dynasty-ruled post-1661, pre-1683  Ming satelite state/rump kingdom of the royal dynastic monarchy of Kingdom of Tungning in [the territories the Kingdom of Tungning ruled over] Taiwan and the Pengu Islands, [the Japanese conquering the Tungning Kingdom in this timeline] on 10–16 July 1683 instead of the Great Qing Empire like in OTL.

The Royal House of Koxinga/Zheng dynasty is [the Royal House of Koxinga/Zheng dynasty] reabsorbed [the Royal House of Koxinga/Zheng dynasty] into the main branch of the Imperial House of Yamato and the Ming aristocracy, royalty and nobility on exile on Taiwan with the Zheng dynasty are also absorbed into the Japanese aristocracy, royalty and nobility after the conquest of the Kingdom of Tungning by the Japanese in this timeline.

The Japanese also [the Japanese] work to assimilate the Chinese refugees from the Ming that make up the Tungning Kingdom's population and the main indigenous people in Taiwan who also make up 70% of Taiwan's population, the Han Chinese, or rather subgroup who speak Hokkien, a Southern Min language and/or trace their ancestry to southeastern Fujian in China, the Hoklo, [the Japanese working to assimilate the Hoklo] and the other indigenous tribes of Taiwan and the Pengu Islands into the Japanese population in this timeline using the same methods as used in Korea in this timeline.

By the time of the 3 January 1868 Meiji Restoration in the Tokugawa bakufu that [the Meiji Restoration] lead [the Meiji Restoration] to the Japanese imperial family [the main branch of the Imperial House of Great Yamato/Minamoto dynasty] regaining the executive power it [the main branch of the Imperial House of Great Yamato/Minamoto dynasty] had [the main branch of the Imperial House of Great Yamato/Minamoto dynasty] lost [the main branch of the Imperial House of Great Yamato/Minamoto dynasty] to the various shoguns and shogunates ruling over Japan and Okinawa since 1185 and the subsequent dissolution of the Tokugawa bakufu as the government of Japan and the subsequent establishment of the Great Japanese Empire as the post-Tokugawa bakufu government of both the Japanese Home Islands and Okinawa and [the Meiji Restoration] subsequently lead to the rise of Japan as a political, military, economic and industrial superpower, not just in East Asia but the world [the Meiji Restoration in this timeline] does not lead to the displacement of the Tokugawa clan as sei-i taishōgun/shoguns and the samurai class due to the Japanese imperial family, the main branch of the Imperial House of Great Yamato regaining its power due to the Meiji Restoration as in OTL, but [the Meiji Restoration in this timeline] is [the Meiji Restoration in this timeline] instead [what the Meiji Restoration is in this timeline] a compromise between the conservative feudal elites that support the Tokugawa clan and the bakufu system and the liberal democrats who support the imperial family in Tokugawa bakufu-ruled feudal Japan, with the reigning heads of the Tokugawa clan maintaining their [the reigning heads of the Tokugawa clan’s] positions as sei-i taishōgun/shoguns of Japan but [the reigning heads of the Tokugawa clan as sei-i taishōgun/shoguns of Japan after 1868 in this timeline] effectively only controlling Japanese local government in this timeline and [the reigning heads of the Tokugawa clan as sei-i taishōgun/shoguns of Japan after 1868 in this timeline] also leading the Japanese military into battle, becoming something akin to the constitutional royal monarchs of Europe and a Germanic Reichskanzler combined, with the heads of the main branch of the Imperial House of Great Yamato reigning over Japan and Okinawa as Emperors and Empresses of Japan respectively also becoming the combined Japanese constitutional imperial dynastic royal Japanese heads of state and of the Japanese armed forces, presiding over Japan’s national bicameral legislature divided into a a lower house, called the House of Representatives and an upper house, the House of Councillors, with members of both houses [the House of Representatives and the House of Councilors] being [the members of the House or Representatives and the House of Councilors] elected [the members of the House of Representatives and the House of Councilors] directly elected under a parallel voting system, [Japan’s bicameral legislature divided into the Houses of Representatives and Councillors] having the formal responsibility of passing laws and also nominating the Japanese Prime Minister, Japan’s bicameral legislature divided into the Houses of Representatives and Councillors] the National Diet, and also selecting the Japanese Prime Minister from the political party that wins Japan’s free and fair democratic national elections under secret ballot via, through and after the Meiji Restoration like in real life, although the buke/samurai and the daimyō are [the buke/samurai and the daimyō in this timeline] not abolished [the buke/samurai and the daimyō in this timeline] like in OTL after the Meiji Restoration and the subsequent formation of the post-1868, pre-1947 main branch of the supposedly Shinto-pantheon descended Japanese Imperial House of Great Yamato/Minamoto dynasty-ruled unitary parliamentary constitutional absolute imperial royal monarchy of the Great Japanese Empire ruling [the Great Japanese Empire] over [the Great Japanese Empire] Russia’s Sahlakin and [Russia’s] Kuril Islands, the Korean peninsula, Palau, the Carolinas and the Marinas from [the Great Japanese Empire’s stronghold and homebase] the Japanese Home Islands, [the formation of the Great Japanese Empire] as the government of Japan after the Meiji Restoration but rather [the buke/samurai and the daimyō in this timeline] absorbed [the buke/samurai and the daimyō in this timeline] into the Great Japanese Empire’s post-1868, post-1947 hereditary peerage, the Kazoku [Magnificent/Exalted lineage |Kazoku|] in this timeline, with the industrial, economic and military development that made Japan into a great power after the Meiji Restoration in OTL continuing unhindered in the Great Japanese Empire in this timeline, Japan has become the primary naval power in Asia, with the Korean peninsula, Taiwan and the Pengu Islands, and Sakhalin and the Kuril Islands being fully integrated into Japan

[Japan] taking the now Vietnamese side branch of the Imperial House of Zhu, the Vietnamese-Han Chinese Imperial House of Nguyễn Phúc/Nguyễn dynasty-ruled post-1802, pre-1947 absolute imperial dynastic royal monarchy of the Empire of Vietnam in Vietnam as a protectorate in 1869, [Japan taking the Empire of Vietnam in Vietnam as a protectorate] but [Japan] allowing the Empire of Vietnam to [the Empire of Vietnam] control the Lao Khun Lo dynasty-ruled unitary parliamentary constitutional royal monarchy of the Kingdom of Laos in Laos and [Vietnam] control the parliamentary constitutional royal monarchy of the Cambodian House of Norodom-ruled Kingdom of Cambodia in Cambodia due to the clan head of the Imperial House of Nguyễn Phúc/Nguyễn dynasty who was the founding monarch of the Empire of Vietnam, Nguyễn Phúc Ánh, who [Phúc Ánh] reigned over the Empire of Vietnam from 1804–1820 and then from 1802-1804 under the combined regal and era name of Gia Long, [Emperor Gia Long of Vietnam] being more firm in establishing the Empire of Vietnam's status as a restoration, modernization and reformation of not only the Great Ming State, but the Ming dynasty’s post-1644, pre-1662 rump state ruling over Southern Han China and also occupying Guangdong and Guangxi, the Southern Ming/Later Ming, [Emperor Gia Long of Vietnam being  more firm in establishing the Empire of Vietnam's status as a restoration, modernization and reformation of not only the Great Ming State but the Southern Ming/Later Ming] than in real life and allowing migration of anti-Qing Han Chinese and Hui Muslims from Qing-occupied China into the Empire of Vietnam along with adopting Ming-era government customs, traditions and practices in this timeline, in the hope of reclaiming Han China [for the Ming and for the Imperial House of Zhu].