Above are two striking pinku posters, both from the roman porno sub-genre. The first is for Osasuri hentai musume, aka Harassing Perverted Girl, with Rina Nagisa. The English title of this is interesting. You can't be sure if it refers to a perverted girl being harassed, or a perverted girl who harasses. It's the former—the Japanese title, which would translate to something like “caught hentai girl,” makes that a bit clearer. The second poster is for Onna kyôshi: Himitsu, aka Female Teacher 6, with Miyako Yamaguchi and Etsuko Hara.

As the title suggests, it was part of a series, a run of thirteen Onna kyôshi movies made between 1973 and 1983. How in the hell did Nikkatsu Studios manage to milk the concept for so many films? Because audiences didn't care a whit about the plots as long as there was what's known in Japan as fan sābisu, or “fan service”—i.e., giving consumers (usually males) what they want. It's technically a manga term, but we think it applies here, as both posters promise it, and in a laudable example of truth in advertising, the films deliver. Osasuri hentai musume and Onna kyôshi: Himitsu both premiered—in what was a banner weekend for roman porno fans—today in 1978.