Yn ln a childhood friend of ichika and houki till houki moved it was just Yn and ichika as years later Yn saves ichika from being kidnapped as Yn was kidnapped instead and be used for experiments till ichika sister saved Yn and was taken to a academy called the infinite stratos academy were Yn and ichika are protected also the only two makes that can pilot a I.S mostly females can control I.S so Yn and ichika battle other students from different countries

Yn I.S armor

Yn necklace that holds Yn armor

Yn weapons

Yn harem
Houki
Cecilia
Rin
Charlotte
Laura
Chifuyu

Season 1

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Season 2

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Ova of season 1

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Ova of season 2

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Wedding dream

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