This is the same head mold as the standard release MSD fairy girl Nasia (Nasya/Nasha). This head mold is the same as F-01 except that it takes optional ears instead of having normal ears. Standard Nasia came with cat ears, but of course with FCS you can choose any ears you like. The default eye size is 16mm.
Please click on the individual thumbnails to see the pictures full-sized.