I've no idea what Metamorphosis is about, but this piece delivers a real and potent physicality to the feelings of sexual desire, which clashes perfectly with the ethereal and fading nature of the spectre. The phantom's unhampered embrace, along with the girl's unrestricted presentation of her body is more than enough to inspire the most racy fantasies for viewers. Most of all, the unrealized and ghostly appearance of the masculine form imply that just the idea of it all is enough to get this girl's motor running, and her hands padded upon the spectral form confirm her desire. It all makes you feel ready. Or something like that.
That ass is FAT 5/5.