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Would the transformation sequence from Gatchaman and its translations/incarnations count? Except 'they need their shoes and wristbands' to make it work, it's never explained where their civilian outfits go when they transmute, or vice versa.
Hammerspace Anime/Manga examples doesn't include Dondochakka from Bleach
So add the example yourself.
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How well does it match the trope?