[Level Fifteen has a training facility with adjustable gravity---just the place for Sora to work out some
anger and whatever he has on his mind. The Sphere pops on and starts transmitting the inside of a sweatshirt at first, as Sora taking it off and tossing it on the Sphere was what turned it on in the first place.
It rolls to the side after a few seconds, freeing itself and giving the lovely audience a view of the Kingdom's hero giving himself a thorough workout.
The gravity dial is set to 2 and his movements are sluggish because of it---but not very. He has both keyblades out and is working physically, sweat darkening the hair at the nape of his neck and running down his bare back. He's slamming the keyblades in complicated katas against a stout training dummy; he's breathing hard, dashing in and out for attacks.
Sora's speed and acrobatic grace are startling---this is the kid that ritually falls out of bed, after all. He hasn't gone all-out in a while, so it's surprising to see his springs and flips and dashes. After about twenty minutes of mock combat, he stops, leaning over and gasping]