User blog comment:CureLightning/Part 5 announced??/@comment-30379300-20161228012549/@comment-28417557-20161228030143

I think:

A. If Yuzu won't join, then most probably the rule of each class representatives will need to change, most likely results in Yume-Rola-Mahiru-Ako, or S5.

B. If Lily gets the chance of creating Gothic Victoria before the battle, the chance of Yume-Rola-Mahiru-Ako being higher, but if Yuzu joins, Most likely Yume-Mahiru-Ako-Yuzu

C. If Yuzu joins, most likely she will use a PR dress instead of CP, so we still need to wait, hence results in Lily-Ako-Mahiru-Yuzu.

But I think Yuzu will join, since I don't think she doesn't want to be S4 together with Lily right? And there are no rules that a student cannot be S4 twice