I legitimately expected the two would kiss this episode. The romantic/sexual tension between the two is palpable - Michiru was very obviously jealous and it was pretty cute. Love how it all unfolded, ended up being very sweet all around, the little thing with the names in particular.
Dancing is like sex.
I'm taking this comment as a half-joke, but the series has been very deliberate in its subtle parallel of partnership/relationship and dancing/sex. I mean, as subtle as a kick in the groin would be, really, but still. It makes me wonder whether the series would touch on actual romantic relationships and/or sex.
In any case, I feel that this series is flying a bit under the radar, but is consistently entertaining. Looking forward to seeing what comes next.
As an aside, I almost expected Shion to ask her partner for her Millennium item, and the thought still tickles me funny.