I'm going to tag bad_perspective because, while it's easy to say that Aya is actually flying much in front of the walkway, she's also casting a conflicting shadow onto it.

FJH said:

I'm going to tag bad_perspective because, while it's easy to say that Aya is actually flying much in front of the walkway, she's also casting a conflicting shadow onto it.

Could that shadow be from her geta? Those are quite long.

also the shadow is from her foot that is kicked further back than the other which would explain the shadow.