Hentai. Who thought this was a good idea?

The Sons of Polk, airing this fall. BTW isn't the first hentai pic some chick getting it from an octopus woodpainting?

The Dream of the Fisherman's Wife. Stand alone it is an interesting work of art. Knowing it is probably the birth of tentacle hentai makes me want to build a time machine. >8/

Hmmmm maybe the idea of Ika Musume came from tentacle hentai, then they figured she was too cute and decided to turn it into an awesome anime. Yay.

Tentacle hentai predates the internet... Rule 0