>>2360673If you're referring to the neck shadow, its actually something I came up with entirely by myself during her development! I added an invisible mesh around her jaw/chin that causes a layer of her neck to become see-through. Underneath that is another layer of black skin. I did the same thing with her forehead too, to give the look of her hair shadows. I could go into more detail on how this happens if you'd like and how to setup the materials for it, but that's the basics of it. Its similar to methods of getting an "x-ray" type of effect.
One minor downside is that it also makes the line around the chin disappear when viewed from certain angles due to the invisible mesh blocking it. Just in case people wanted an option, I had also added a morph which disables this effect too. Again this is something I came up with on my own and I've never seen this done before on any model, but since I really like such details in artwork relating to the series (and other anime) I had decided to attempt it, heh. Plus it adds a bit of uniqueness to my model design too, which is nice!