Do an interesting, riveting, realistic, plausible, sensible alternate history scenario for an alternate history backstory and worldbuilding for an alternate version of Cardcaptor Sakura more similar to Cardcaptor Sakura's spiritual successor: Code Geass to the point where this alternate version of Cardcaptor Sakura is part of the Gundam series, but not in any canon Gundam series as not only Sunrise, but A.P.P.P [the makers of the JoJo's November 19, 1993 – November 18, 1994 and 	May 25, 2000 – October 25, 2002 Stardust Crusaders OVA, which is a part of this alternate version of  Cardcaptor Sakura] is involved in this production. In this scenario, like the flight of the still-Tudor ruled United Kingdom to Canada and the Caribbean after a Napoleonic invasion of the British Isles in the world of canon Code Geass, with the German Hanovers seizing power from the Tudors leading to the formation of the Holy Brittanian Empire from Code Geass, and the German House of Saxe-Coburg Gotha seizing power from the Hanovers after the death of Queen Victoria of the House of Hanover leading to the strengthening of Brittania, the Mongol-Manchurian Imperial House of Li-ruled post-618 AD, pre-690 AD and then post-705 AD, pre-907 AD absolute imperial dynastic monarchy of the Great Tang Empire/"Tang dynasty" over Han China from East Turkestan and the Hui-dominated Central China, [the Tang dynasty] conquered the post-4th century AD, pre-701 AD  the main branch of the supposedly Shinto-pantheon descended, Japanese Imperial House of Great Yamato/Minamoto dynasty-ruled  tribal alliance centered on what is now the southern section of the Japanese Home Islands, which ruled over the alliance of noble families in the central and western parts of the Japanese archipelago and the entire Korean peninsula known as the Yamato Kingship at the end of its [the Imperial House of Li's Tang dynasty's life] or rather the Tang dynasty fled to the lands of the Yamato Kingship, conquered it but subsequently got absorbed into the Yamato Kingship, leading to the birth of a version of modern Japan signficantly stronger than its OTL format with heavier Tang influences, and thus remains a regional power in Asia even after the formation of the shogunate system, conquering the Tungning Kingdom on Taiwan and the Pengu Islands instead of the Qing, keeping the Tokugawa shogunate as the Japanese local government during the Meiji Restoration, seizing the Qing homeland of Manchuria during the Xinhai Revolution, intervening on the side of the Beiyang Government as the Empire of China founded and lead by Yuan Shikai from 1915-1916 against Republican rebels lead by Dr. Sun Yat-Sen in the National Protection War after Yuan Shikai died before he could crown himself Emperor, joining the Central Powers in WW1, allowing the Central Powers to win in WW1, building up influence in the Americas as without American interference in WW1, the USA crumbled into ruin and neglect while policing the Americas before launching a joint invasion of the USA with the Central Powers, the British Empire and Japan's Asian allies supposedly to save the USA from a on the verge of death rump USSR located in Siberia but in reality to collect on debts owed by the USA sometime in 1993, with the Japanese conquering the US West Coast, the British the former Confederate States and Germany and Austria-Hungary the original 13 American states, akin to the 1955 AD invasion of Japan in Brittania by Code Geass. Like the Japanese in canon Code Geass, the Americans fight a resistance war but because this alternate imperial Japanese shogunate is not incompetent like the Brittanians in canon Code Geass, the Americans are slowly losing. Like in canon Cardcaptor Sakura, Kinomoto Sakura becomes the mistress of the Clow Cards with the help of Cerebus but this more like Nunnally becoming a magical girl with the help of Nemo in Code Geass: Nightmare of Nunnally with Sakura's brother, Touya, being akin to Lelouch in the Code Geass franchise.