Can't figure out who's the blue-grey one right in front of Ran's face, the one with large grey-green ears. It doesn't seem to be tagged yet.

Me neither, until now. Watch the little rhombus at its side, it's cirno.

So it is. So that's a bow, not ears. I totally overlooked the bits of her ice wings before, plus I usually expect Cirno to be a much brighter shade of blue.