Comics Alliance has an essay by Sarah Horrocks on Guido Crepax’s trippy bondage/erotica comic Bianca. Crepax is probably best known outside of Italy as the artist of the Story of O and Emmanuelle comics adapations.
Like Alan Moore and Melinda Gebbie’s Lost Girls, Bianca is more obsessed with artistic execution than with sexually arousing its audience. In fact, I think that for the most part, Bianca fails as porn. Indeed, if it were more successful as porn, it would probably be in print in English.
The post is more about Crepax’s innovative panel design and other artistic work, and less about the story’s content. The author laments that these pioneering works are difficult to find (at least through legitimate means) in the US, and a whole generation of comics artists have been unexposed.