From h-manga "あれふぇち" (rom: are fechi), a book about various fetishes. Nothing too hardcore or niche though, as far as I recall.

Download link here: http://www.megaupload.com/?d=YX06F6CK (with thanks to Sukebe)

invalid link ;_;

This is completely unrealistic. There are women in her porn.

http://rapidshare.com/files/171835491/_Kitakawa_Touta__Are_Fetish.zip