What is the official name of Japan in Japanese with Romanization in the world of Muv-Luv, where the Meiji Restoration came after an earlier Boshin War in 1867 which ended with the main branch of the Tokugawa clan whose clan heads had been reigning over Japan as its shoguns since 1603 and anti-Shogun daimyo united for a common cause to overthrow the pro-western Japanese government, then under Tokugawa Yoshinobu as shogun of Japan and established the restoration of imperial rule with a new Shogun, Yoshinobu’s adopted son, Tokugawa Iesato, who ruled as Shogun of Japan from 1868 until his death in June 5, 1940 and the 5 Regent Houses of Koubuin, Ikaruga, Saionji, Kujo, and Takatsukasa from Muv-Luv being formed from and coexisting beside the main branch of the Tokugawa clan, with a Shogun being chosen from each Regent House one after the other after Iesato’s death via the Meiji Restoration, which made the Tokugawa shogunate the local government of Japan and its provinces of Korea, Taiwan and the Pengu Islands and Sakhalin and the Kurils while the heads of the main branch of the supposedly Shinto descended, Japanese Imperial House of Great Yamato/Minamoto dynasty ruling over Japan as its Emperors and Empresses respectively became combined constitutional imperial royal heads of state and of the Japanese armed forces with the right to select the Japanese Prime Minister and also to preside over the Japanese National Diet via the 3 January 1868 Meiji Restoration in the Tokugawa shogunate in the world of Muv-Luv, with Japan experiencing an accelerated rate of the industrial, economic, military and cultural and technological growth it had during, via and after the Meiji Restoration in real life in the world of Muv-Luv. 

Let’s just say Japan never lost the Greater East Asian War of 1932-1947 like in canon Muv-Luv and in real life and keeps its overseas provinces of Korea from 1910, Taiwan and the Pengu Islands from 1898 and Sakhalin and the Kurils from 1906 indefinately post-1947 as a result due to Chiang Kai-shek being killed after the 1926-1928 Northern Expedition, causing the Ming to be restored as the government of the sixteen provinces of Han minus Guangdong and Guangxi while Manchukuo and Mengjiang in Manchuria and Inner Mongolia respectively are formed immediately after the Ming restoration in 1928 instead of in 1932 and 1939 like in real life, though as Japanese protectorates as in real life with the restored Ming becoming a Japanese protectorate as well, while KMT republican loyalists opposed to Kai-shek move back to Guangdong and Guangxi and form a independent Cantonese Republic, which also becomes a Japanese protectorate, which means Japan never attacks Pearl Harbor, strikes North into the Soviet East Coast and Soviet-occupied Mongolia first before striking Western colonial occupation of Asia and liberates the Kingdom of Hawaii in Hawaii via covert operations, along with the Second Philippines Republic in the Philippines preventing US intervention and giving the Nazis enough time to nuke Moscow, NYC and Washington D.C with experimental nuclear tipped ICBMs, plunging the Anglo-American alliance and the rest of the Allies into chaos and ending the USSR in a joint Japanese-Nazi invasion. 

After the war, Germany proper separates from Nazi Germany and restores the Weimar Republic, while the rest of Nazi Germany absorbs the former Austria-Hungarian territories and becomes a restored Austria-Hungary. 

The USA is humilated and subsequently divided with a Japanese controlled West Coast, a Austria-Hungarian controlled East Coast and a neo-Confederate States in the Southern USA. with the restored Weimar Germany quickly transitioning towards a restored Kingdom of Prussia-ruled German Empire with the proported descendants of Adolf Hitler, who is said in Germany to be pre Weimar Imperial Germany’s last Kaiser: Wilhelm II’s of the House of Hohenzollern’s Gippsland, Australia-born openly gay grandson and Wilhelm II’s chosen successor as German Kaiser, who [Adolf] had the illegitimate son of Austria’s last Kaiser; Franz Josef I of the House of Hapsburg-Lorraine, Sebastian von Hapsburg as his life partner, making Sebastian and Adolf Nazi Germany’s imperial couple with Adolf succeeding Willhelm II as German Kaiser in 1943, but due to Adolf’s sperm being stolen from him by the Russian mafia and used to impregnate the part Polish illegitimate daughter of Soviet dictator Josef Stalin, who was in fact the illegitimate son of Imperial Russia’s last Empress: Princess Alix of the German House of Hesse-Darmstadt, who then had children with Sebastian’s descendants in Gippsland Australia, who were brought to Germany by Wehrmacht loyalists and made the current German imperial family. 

Also lets just say Hyakka Ryouran and Muv-Luv take place in the same world. What is Japan’s government style like, its quality of life, allies and alliances and how does the presence of the Master Samurai from Hyakka Ryouran affect life in Japan?