ははははは~
Hmm, the outfits look like prison uniforms at a glance. Or, at a quicker glace - closets. Coincidence? I think not..My deduction of this is that Aya and Miki are prisoners of their same sex love secret therefore they will come out of the closet! Im sorry..I'll be serious now.
Very retro...60's .. hm... Perhaps the song is something swinging old fashion..I mean the outfits has to match the music am I right ^^