Danbooru-based image board with a specialization in high-quality images.
chibi_(artist) dress

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Looks to me like a movie theater or some kind of fancy art exhibition.
Maybe a silly aquarium for girls that live underwater. u never know when it comes to anime.

Love the piece in spotlight tho, but her left foot is pretty messed up there. She doesn't seem to mind it much however.
+Anima had such a scene spoiler