>>6546637I still disagree that there is a lot of fat on Mai's ass.
This diagram is a bit shitty, but its the only one I could find to demonstrate this.
The yellow area depicts fat, which is the part which will jiggle. These two drawings both depict extremes of the fat spectrum and both don't represent Mai but you'll just have to bare with me here.
If Mai had a lot of fat on her butt, then she would have more of violent bouncy motion rather than a subtle jiggle like the one depicted in the animation. That is not to say that Mai's ass is not 100% muscle though. Its clear that she does have a layer of fat on her butt, and the shape depicts this pretty well. The drawing on the left shows a 100% muscly ass as more shapely than they would actually be in real life. In reality, muscly asses cave in at the sides more, and lack the rounded shape aesthetic that most asses strive for.
Since Mai does not have a hyper-muscly looking ass like that, we can only assume that she does have an ample amount of fat there, but not to such a degree that it would cause violent bouncing whenever she does high intensity motions like the kick in the animation. I think its a very nice balance between fat and muscle and would most likely feel very nice in real life, but her ass is definitely not as fat as some of the other once you've posted.