^ Agreed.
I don't think Risako has a
bad voice, she's definitely more skilled vocally than Sayu and probably Jun as well, I just find her voice really grating. Her solo at the beginning of ONLY YOU ...

. But that's just me personally.

And vocals aside, she does
not fit into a group like v-u-den at all. I'm all for shuffling the girls around to perform old H!P songs but if I have to see Risako in a bunny girl suit...