How stupid am I not realizing that all the girls record the whole song by themselves. Like Zunu said, they don't need to, just remix. However, they have to rearrange their live performance becauce of the loss. :< Assuming that Karin will now be the only center of the group.
Yeah, finding a new blend and such, I will be a much easier job. The only issue would be the group shots, which can be done quickly (Wakuteka).
I wonder who will inherit Aina lines in the other songs?