One thing to note here: Clara apparently doesn't speak Japanese. Meta-wise, it's because her VA IS an actual Russian.
In the movie she actually can speak Japanese, much to the shock of Katyusha.
*LIFT*First Attempt*LIFT*C L A R A !?N-Not that I'm lonely or anything!*SLIDE*~~Huh!? Nonna's absent with a cold?*PLUNK*Don't tell me you'll be filling in for Nonna!?