There ya go..I find it, at last!
THIS THREAD!
Kishi made an official appearance as Ebisu Muscats leader in the final episode of Margarine Bank. This took place during The Margarines' solo concert on 12/23 - Kishi took the stage in her Muscats uniform to pass on her Muscats badge and their "spirit" to the Margarines. She laments that the Muscats were never able to perform at the Budokan and move up to arena/stadium performances and so she passed those dreams on to the Margarines.
It kinda surprised me that a year after, I guess, after she passed on the
Muscats Spirit to the leader, instead of The Margarines as a whole, It kinda passed to Miku, Mai, Aika, and Akino, which are the members of the said group, when they joined Ebi*Masu...and then, she said that almost all of them (the "seniors" of EbiMasu) didn't like the revamp (which kinda scratched my head since IDK if Aino didn't see the same 4 faces that she saw during her appearance at that time...dunno

) It kinda saddens me that she forgot (I guess) what she did at that time. Maybe if she can, she will give her leader badge to the new Ebi*Masu leader (whoever she is) in an episode...and then one day, it will hit her like, "Heck, I kinda like the revamp after all." Maybe instead of saying that, I think one day, Aino would see either one of the four, then she remembered seeing her while giving the badge, and then telling, "Hey, you are now the member of Ebi*Masu! Congrats!" followed by a pat on a shoulder.

That's my opinion, so....yeah...

And oh, I almost forgot, this is also a reminder that Saemi did went on the Margarines' audition....yet, failed to enter.
Go to 1:55