Hentai Quotes - I'm pretty sure I know the answer

The plot is about a world where censorship has caused a generation of people who's knowledge of sex really is this bad, where freedom fighters are spreading amateur porn, basic sex education, and a lot of dirty jokes. Now take all that and add slapstick comedy, because it's actually pretty funny!

Not a hentai. Just an ecchi anime that uses its ecchi elements in a surprisingly smart way.