Asuka: Jiggles surprisingly much, actually a little flabby
Ikaruga: No jiggle. Toned and firm.
Katsuragi: A bit of jiggle, but not much at all. Just a little soft.
Yagiu: Jiggles way more than it should. For a 15 year old she has quite a flabby butt.
Hibari: Jiggles more than any other girl in the game! o_0 Someone put her on a diet and make her do squats, or she won't exam from the Hanzou Academy. Her ass isn't "a little" or "quite" flabby, it's downright flabby.
Homura: She does have some ass jiggle, but it's very slight.
Yumi: No jiggle. Toned and firm.
Green haired girl: Quite a bit of jiggle action back there, it doesn't look very toned, but it's not really flabby either.
Mirai: Believe it or not, what little ass she has is jiggly! Not very much jiggle, but then again, she doesn't have much ass. She better watch it...
Haruka: Wobbly. Doesn't reach Hibari's or Yagiu's level of jiggliness, but it's definitely plump.
Now what's the shocking thing? The youngest girls have the most ass jiggle! Hibari and Yagiu both have flabby butts even though they're only 15.
And why the heck does Mirai's little rump jiggle?! Considering its small size, it's dangerously close to the flabby territory.
And there you have it. You can see their asses jiggling either during transformation or during cloth destruction #2: