Just a simple question.

This is for a crossover fanfic of mainly High School DxD, Fate/Stay Night: Kalied liner Prisma Illya, the Tsukhime remake visual novel with elements from the Tsukhime original visual novel, anime and manga, Cardcaptor Sakura, Kiss x Sis and Elfen Lied which takes place in a crossover world where the events of Koihime†Musou, and later, Unbreakable Machine Doll, Gosick, and then Code Geass and then Muv-Luv all happened in chronological order in the same world, so don't bite.

In this fanfic, the young kitsune yokai princess Kunou from High School DxD, and the current heiress of the partially Han Chinese and thus focusing on Han Chinese traditional martial arts side-branch of the Japanese noble clan that is secretly a clan of oni from Tsukhime, the Tohno, the Arimas, Arima Miyako from Tsukhime, along with the Japanese corporate heiress that is secretly a magical girl by night, Kinomoto Sakura from Card Captor Sakura, are all the same person, having the legal name of Hyodou Miyako due to being the full younger sister of High School DxD's protagonist, Hyoudou Issei from High School DxD, who is the same person as Sakura's older brother, Kinomoto Touya from Card Captor Sakura in this scenario.

In this scenario, the Arima clan is descended from Chouhi Yokutoku, the female version of Zhang Fei seen in the Koihime†Musou series, in addition to being a part of the Tohno clan like in canon Tsukihime which of course makes Issei and Miyako Chouhi's descendants. Issei doesn't mind this, but Miyako inherits a lot of Yokutoku's mannerisms and habits, in addition to Yokutoku's super strength, along with the latter's  love for spears and headstrong personality, which she uses to collect the Clow Cards from Cardcaptor Sakura and beat up the delinquents who bother her in the peaceful small town/overgrown suburb/small city of Kuoh located near Kyoto from High School DxD for training practice in order to win Issei's heart despite him being her full older brother.

Miyako would obviously wear hanfu when not at school or at home and would carry around a collapsable spear which she transforms into a wand-spear hybrid weapon using her magic when transformed as a magical girl.

Since Miyako is obviously unconsciously channeling Chouhi Yokutoku here, she'd copy Yokutoku's iconic attire of a upper chest length jacket, skin-tight black pants but of course would wear a top underneath the jacket, whether that be a blouse or a T-shirt unlike  Yokutoku, although she obviously isn't aware of this.

What would Miyako wear as both training wear, casual clothes, and formal outfits, taking in mind that she honors both her Chinese and Japanese noble ancestry, the Japan this story takes place in is the imperial shogunate with the Tokugawa clan's heads still acting as shoguns but the Tokugawa clan being divided into the 5 Regent Houses of Koubuin, Ikaruga, Saionji, Kujo, and Takatsukasa, which rule over Japan as shoguns in a circulatory manner after the death of Tokugaka Ieasato and the main branch of the current reigning Japanese Imperial family, the supposedly Shinto pantheon-descended, Japanese Imperial House of Great Yamato regaining the power it had lost to the shoguns via, during and after the Meiji Restoration, although Japan still lost WW2 but was allowed to keep its shogunate system of government and imperial court intact, [the Japanese imperial shogunate] with the name of the Empire of Japan from Muv-Luv, even though unlike canon Muv-Luv, the BETA were obliterated when they arrived on the moon and thus never invaded Earth, with China instead collapsing after the PRC in the mainland China and Nationalist China in Taiwan and the Pengu Islands unite at the same time as West Germany [not the real life West Germany, but a Wehrmacht military junta ruling over Greater Germany after Operation Valkyre succeded, having the name Federal Republic of Germany] and East Germany [not the real life East Germany, but a German socialist government in exile in the ruined Soviet Union] reunite in 1989, with Manchukuo under the rule of the Qing dynasty's reigning imperial family, the Manchu House of Aisin-Gioro being restored in Manchuria, Mengjiang under the rule of the main branch of the Genghis Khan descended Mongolian Imperial House of Borjigin being restored in Inner Mongolia's Chahar and Suiyan provinces, the East Turkestan Republic and then the Kumul Khanate under the rule of the side branch of the main branch of the Imperial House of Borjigin, the Imperial House of Chagatai being restored in East Turkestan, the Yunnan Clique and then the Dali Kingdom under the supposed descendants of the Dali Kingdom's reigning imperial family, the Imperial House of Duan in Yunnan, Guangdong and Guangxi would unite into what is legally a restored Nationalist China but in truth an independent Cantonese Republic, Tibet restores the Buddhist royal theocratic monarchy of the Kingdom of Tibet and the PRC-Nationalist Chinese union government ruling over the fifteen provinces of Han in the China region excluding Yunnan, Guangdong and Guangxi would transition towards a restored Beiyang Government, more specifically a restored Beiyang Government as Yuan Shikai's short-lived Empire of China, but with the supposed descendants of the Ming dynasty's reigning imperial family, the Han Chinese Imperial House of Zhu being enthroned as this restored Empire of China's reigning imperial family instead of Yuan Shikai's descendants, thus making this restored Empire of China a restored Ming dynasty in all but name, with the Empire of Vietnam ruled by the now-Vietnamized side-branch of the Imperial House of Zhu, the Imperial House of Nguyễn Phúc/Nguyễn dynasty in Vietnam after the fall of the communist regime of the Socialist Republic of Vietnam in Vietnam, the return of the Kingdom of Laos ruled by the Laotian Khun Lo dynasty in Laos, the fall of the Soviet satellite of the DPRK in North Korea and the ROK in South Korea and the subsequent return of the entire Korean peninsula, along with both Taiwan and the Pengu Islands and Sakhalin and the Kurils to Japan after the unification of the PRC and ROC, and Japan making Manchukuo and Mengjiang into protectorates once more. 

The German House of Hohenzollern-ruled Kingdom of Prussia-dominated German Empire, the Swiss-Austrian House of Hapsburg-ruled Austria-Hungarian Empire and the part-Hungarian Catholic side branch of the German main branch of the current British royal family, the German House of Saxe-Coburg and Gotha, the German-Hungarian House of Saxe-Coburg and Gotha-Koháry-ruled Kingdom of Bulgaria all return after the unification of Germany and reinforce the Treaty of Brest-Litovsk on the weak Soviet Union, with the Germans restoring the Germanized Slavic House of Mecklenburg-Schwerin-ruled United Baltic Dutchy in Latvia and Estonia, [the Germans restoring] the Germanized side branch of the House of Mecklenburg-Schwerin, the House of Urach-ruled Kingdom of Lithuania in Lithuania, [the Germans restoring] the side-branch of the Hohenzollern-ruled Kingdom of White Ruthenia in Belarus, [the Germans restoring] the Ukrainian House of Skoropadsky-ruled Ukrainian State/Second Ukrainian Hetmanate in Ukraine minus Donbass and [the Germans] establishing the Don-Kuban Union in Russia's Don and Kuban regions and the Ukrainian Donbass region, [the Germans] restoring the Kalmyk Khanate in Kalmykia and [the Germans] restoring the North Caucasian Emirate in Chechnya and western Dagestan, [the Germans] restoring the Kingdom of Finland ruled by the German House of Hesse-Kassel in not only Finland, but the Russian Kola peninsula and Russian Karelia, with the Germans restoring the Kingdom of Georgia in Georgia under the rule of the Italian reigning royal family Franco-Spanish-Italian side branch of the German-French House of Savoy, the House of Savoy-Carignano, which still rules over the Kingdom of Italy in not only Italy but Libya and the Horn of Africa due to Mussolini and the fascists having been wiped out by American invasion forces before German ICBMs decimated Allied positions and lead WW2 into a stalemate in the last days of WW2 many years before this.

The German protectorate of the French State, popularly known as "Vichy France", which remained even into the Cold War and beyond due to German ICBMs and other WMDs giving it de-facto control over Europe from the Azores to the European Urals but the Baltics, Eastern Europe and the Caucuses remaining in a legal limbo due to the Soviets still claiming these regions despite only governing Siberia in truth, until the monarchical restoration after the unification of Germany, [the French State] becomes a restored Bourbon Kingdom of France in the North, a Hohenzollern-ruled Occitian Kingdom in Southern France and a German controlled Orleans-ruled Breton Dutchy in Brittany. 

Issei was born sometime after this, in the early 2000s while Miyako was born six years after him at the end of the early 2000s.