rule 34 absorption absorption vore absurd res amy rose anthro anthro only ass big butt darkartist darkartistkaiser digestion duo eulipotyphlan female female prey gender transformation hedgehog hi res machine male malefemale male pred male predator mammal metal sonic mtf transformation robot robot pred sega sonic series sonic the hedgehog sonic the hedgehog series tail fetish tail play tail vore transformation vacuum vacuum vore vore 5914523