Quote:And Love Hina is a Hentai!! Nude girls in a hot spring? Its not them having sex, but its still hentai!! And Bubble gum crisis? Look at their racks!!!!
well, going by categories of anime (I'm talking in terms of how they're marketed and released), there is nothing that defines "naked girl in spa" as making an anime "hentai".
Hentai titles are often quite explicit, and almost always depict sex and sexual activities. Hentai is, in its raw form, an animated version of porn (no matter how creative it sometimes gets
).
If every anime with a girl with large boobs is a hentai, the industry would be bankrupt, since so few fans (in comparison) would purchase a hentai title...
It's true that nakedness is a perverted element, but it's not enough to classify the anime as "hentai" in intention/audience/marketing etc.