It had an interesting ambiguity about what I was watching--an inversion/subversion of a single woman in Japan, precise choices of what in the world Yamanaka decides to show us. And then it turns in the final third into someone else again. I'm undecided if that it was for more or less (though not better or worse, she knows what she's doing).
A really strong followup to her debut, and Yuumi Kawai does quite well. The non-protagonists are still a little underwritten, though much less so than in Amiko, Yamanka's first movie.