なぜノンナが将校で自分がヒラのコスなのかと抗議するカチューシャ。
#カチューシャ生誕祭

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Source: https://twitter.com/uonaThereminvox/status/826402381533286400
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Katyusha protesting why she herself is cosplaying as a rank-and-file whereas Nonna is cosplaying as an officer.
#KatyushaBirthday

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Source: https://twitter.com/uonaThereminvox/status/826402381533286400
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