Doing this for a multi-crossover fanfic I'm writing. Which character would be suitable for replacing the blonde-haired, blue-eyed, tall, slender and petite but also very buxom middle school Deutsche ducal heiress Ilfriede von Feulner from the Muv-Luv Alternative visual novel, anime and literature franchise, who [Ilfriede] pilots [the machine Ilfriede pilots] a Tactical Surface Fighters/TSFs [oversized fighter planes |TSF|, |TSFs covered in| the substance TSFs are (TSFs) covered (TSFs) in| an anti-projectile and heat-resistant composite that |the anti-projectile and heat-resistant composite that TSFs are (TSFs) covered (TSFs) in| has |the anti-projectile and heat-resistant composite that TSFs are (TSFs) covered (TSFs) in| been |the anti-projectile and heat-resistant composite that TSFs are (TSFs) covered (TSFs) in| been |the anti-projectile and heat-resistant composite that TSFs are (TSFs) covered (TSFs) in| been |the anti-projectile and heat-resistant composite that TSFs are (TSFs) covered (TSFs) in| further treated |the anti-projectile and heat-resistant composite that TSFs are (TSFs) covered (TSFs) in| been |the anti-projectile and heat-resistant composite that TSFs are (TSFs) covered (TSFs) in| with |the anti-projectile and heat-resistant composite that TSFs are (TSFs) covered (TSFs) in| been |the anti-projectile and heat-resistant composite that TSFs are (TSFs) covered (TSFs) in's further treatment| anti-laser coating with |what TSFs have| the ability |TSFs| to |what TSFs can (TSFs) do| operate |TSFs| in every sort of condition, |TSFs| having |what TSFs possess| particle beam cannon and plasma blaster weaponry, |TSFs| being |what TSFs are| able |TSFs| to |TSFs| operate in space in addition to |TSFs| flying in the skies of Earth, |TSFs| being |what TSFs are| near impossible to destroy |TSFs| with conventional weaponry, |TSFs| possessing |what else TSFs have| the ability |TSFs| to |what else TSFs can (TSFs) do| transform into |what TSFs can (TSFs) transform (TSFs) into| oversized humanoid mechs |TSFs' other forms| with |TSFs' mech forms| all-purpose manuvarabilty, |TSFs' mech forms| moving via |the means of movement for a TSF's mech form| a combination of bipedal locomotion and rocket thrust, |TSFs' mech forms| using stealth and superior mobility to |what TSFs' mech forms utilize stealth and superior mobility for| outmanuering any opponent, |TSFs| from |which media franchise TSFs are (TSFs) from| the Muv-Luv franchise], [Ilfriede piloting |Ilfriede| a TSF unit],  [the persons who may or may not replace] Illyasivel von Einzbern, the white-haired [Illya], green-eyed [Illya], short [Illya], slender and petite [Illya], buxom [Illya], shy [Illya], easily flustered [Illya], cheerful [Illya] and mostly positive  heiress [Illya] of [what Illya is the heiress of] das Königshaus von Einzbern [the Royal House of Einzbern |Königshaus von Einzbern|], a powerful, influential and somewhat infamous Deutsche noble, aristocratic and unofficial royal family [das Königshaus von Einzbern] that [what happens to das Königshaus von Einzbern] has tremendous influence [das Königshaus von Einzbern] in Europa [Europe] and [what else das Königshaus von Einzbern is apart from being powerful, influential and far-reaching] one of [which group das Königshaus von Einzbern belongs to] the four great houses of [what group of four great Houses das Königshaus von Einzbern belongs to] the Clocktower [a secret organization |the Clocktower|, research facility |the Clocktower| and association of wealthy, influential and powerful European, Middle Eastern, South Asian and East Asian noble, aristocratic and even royal families |the Clocktower| designed for |what the Clocktower was created for| the study, propagation and continuation of magic and the mystical, which |the Clocktower| is |the Clocktower| located |the Clocktower| in |which the Clocktower is located in| London, England], [das Königshaus von Einzbern being one of the four great houses |das Königshaus von Einzbern| of the Clocktower] making it [what happens to das Königshaus von Einzbern due to it |das Königshaus von Einzbern| being |das Königshaus von Einzbern| one of the four great houses |das Königshaus von Einzbern| of the Clocktower] the real royal family [das Königshaus von Einzbern] of [which nation das Königshaus von Einzbern is the real royal family of] the Royaume-Uni de Grande-Bretagne et d’Irlande du Nord [the United Kingdom of Great Britain and Northern Ireland |the Royaume-Uni de Grande-Bretagne et d’Irlande du Nord|], a unitary parliamentary constitutional democratic monarchy [the Royaume-Uni de Grande-Bretagne et d’Irlande du Nord] which [the Royaume-Uni de Grande-Bretagne et d’Irlande du Nord] consists [the Royaume-Uni de Grande-Bretagne et d’Irlande du Nord] of [the Royaume-Uni de Grande-Bretagne et d’Irlande du Nord's territories] Les Iles Britanniques/Britannica Ostrova [the British Isles |Les Iles Britanniques/Britannica Ostrova|, which |Les Iles Britanniques/Britannica Ostrova| consist |Les Iles Britanniques/Britannica Ostrova| of |the territories in Scandinavia that are part of Les Iles Britanniques/Britannica Ostrova| |Le Royaume d’Angleterre |Kingdom of England/England (Le Royaume d’Angleterre)|, Le Duché de Galles/Dugiaeth Cymru |the Dutchy of Wales/Wales (Le Duché de Galles/Dugiaeth Cymru)|, Le Royaume d’Écosse/Rìoghachd na h-Alba |the Kingdom of Scotland/Scotland (Le Royaume d’Écosse/Rìoghachd na h-Alba)|, and Ríocht na hÉireann |the Kingdom of Ireland/Ireland (Ríocht na hÉireann)|], [the Royaume-Uni de Grande-Bretagne et d’Irlande du Nord] ruled [the Royaume-Uni de Grande-Bretagne et d’Irlande du Nord] by [the Royaume-Uni de Grande-Bretagne et d’Irlande du Nord's reigning family] the Deutsche-Russkiye Königshaus Sachsen-Gotha-Romanow [Royal House of Saxe-Gotha-Romanov |Königshaus Sachsen-Gotha-Romanov |Königshaus Sachsen-Gotha-Romanow|] as [what the Königshaus Sachsen-Gotha-Romanow rules the Royaume-Uni de Grande-Bretagne et d’Irlande du Nord as] its [the Royaume-Uni de Grande-Bretagne et d’Irlande du Nord's] famille royale [royal family |famille royale|] and  from [which media franchise Illya is from] Fate/Stay Night, more specifically the version of Illya seen in the Fate/Stay Night spin-off Fate/Stay Night: kalied liner Prisma Illya, or [the other person that may or may not replace Ilfriede in my fanfic] the golden haired, amber eyed, short, slender and petite, elementary school girl and kitsune [fox |kitsune|] yōkai [a supernatural being/monster |yōkai|, a type of monster |yōkai| that |a yōkai| usually has the form of an animal, whether mammalian, reptilian or otherwise, and |a yōkai| can |what a yōkai can do| transform |a yōkai| into |what a yōkai can (a yōkai) usually transform into| a fully human, human with animalistic traits, or into a form akin to an anthropomorphic animal |a yōkai|, |a yōkai| usually |a yōkai| found |a yōkai| in |where a yōkai lives| Nihon/Nippon/Yamato |Japan|], more specifically kitsune daiyokai daiyōkai [great monster |daiyōkai| a very powerful type of yōkai |a daiyōkai| that |a daiyōkai| is |what a daiyōkai is| much stronger and smarter |a daiyōkai| than common yōkai] Kunō from [which series Kunō is |Kunō| from] the High School DxD light novel, manga, anime and video game franchise? Now, the person who replaces Ilfriede will [the person who replaces Ilfriede in my fanfic] retain her [Ilfriede's] ability to pilot TSFs. The BETA of Muv-Luv don't exist there but the TSFs were still created during the Cold War. Personally I'm leaning towards Illya as she [Illya] and Ilfriede are [Illya and Ilfriede] both {illya and Ilfriede] Deutsche noble heiresses [Illya and Ilfriede] in their [Illya's and Ilfriede's] respective franchises [Fate/Stay Night and Muv-Luv] but I also chose Kunō because she [Kunō] and Ilfriede are both blonde. This is just a hypothetical for a fanfic I'm doing...so provide a good, detailed, well-explained answer and don't judge.