The growth on the left foot, the thin right leg, the cordless corded wand, and the thumbless right hand are all suspicious. At the same time, the resolution would not be possible with a machine since their resolutions are always divisible by 8, unless the artist was upscaling at a real weird multiplier. Also the background is almost certainly manmade, a machine would have messed up the size of the bricks. I believe the artist made the background themselves and then pasted in the output of a machine, which would technically make this assisted, though I would ask who was doing the assisting here.
Wasn't really planning to post this but it was deleted and a completely nude variant went up today which someone did upload so I just took this out of my media assets.
A small issue with that is that a number of gyaru-fication posts are going to wind up as collateral. Particularly the ones that deal with ganguro, and they existed years before the current trend of blackwashing became a thing. I'm not a big fan of that either, but I just wanted to bring that up since those weren't created to open a front in the culture war.
Adding dark-skinned_female alternate_hairstyle alternate_skin_color in blacklist will leave gyaru and ganguro mostly unaffected with only 6 images getting caught in the gyaru tag with that blacklist combo and only 2 in the ganguro tag.