Hentai anime is representative of a respect for the imagination that is forcefully suppressed in the West. While adult sex with schoolgirls is illegal, an outright denial that the thought ever crosses some people's minds is patently absurd.
Hentai anime is representative of the strict separation of fantasy and reality that stands out as one of Japan's strongest features in a century where both are being blurred by the forces of globalization and technology.
Hentai anime is, in part, a response to necessity since the law only allows artists to show girls being made love to by anything other than a cock (demons with hundreds of tentacles, or trees with branches that do naughty things).
Hentai anime is an implicit argument that at the imagination is a sign of our humanity, whether it is expressed apocalyptically, erotically, or through multitudinous species of Pokemon.
Hentai anime is in representative of the fact that, despite Japanese society being rigid, the Japanese are not embarrassed by their imaginations.
Hentai anime is a word literally meaning ‘metamorphosis' or ‘transformation', it is a word rarely used in the Japanese (the Japanese use the english word “ero” (erotic) for this genre) but a nice word none-the-less as it gets at the visual and imaginative properties that make pornographic anime and manga so striking: the sudden yet fluid transformations of characters and scenes.