Two early works escape being defined as hentai, but contain erotic themes.
This is likely due to the obscurity and unfamiliarity of the works, arriving in America and fading from public focus a full twenty years before importation and surging interests coined the Americanized term of hentai.
Japanese animation (anime) had its first hentai, in both definitions, with the 1984 release of Wonderkid's Lolita Anime, overlooking the erotic and sexual depictions in 1969's One Thousand and One Arabian Nights and the bare breasted Cleopatra in 1970's Cleopatra film.
Erotic games, another area of contention, has the iconic art style first depicted in sexual acts in 1985's Tenshitachi no Gogo.
This is a list of Japanese erotic video games, also known in Japan as eroge. The market in Japan for this type of game is quite large, and only a small number of the games gain any level of recognition beyond the fans of the genre.
For example, outside of Japan a work depicting lesbian sex might be described as "yuri hentai", but in Japan it would just be described as "yuri". The original meaning of hentai in the Japanese language is a transformation or metamorphosis.
The lolicon boom of the 1980s saw the rise of magazines such as the anthologies Lemon People and Petit Apple Pie.The term eroge (erotic game) literally defines any erotic game, but has become synonymous with video games depicting the artistic styles of anime and manga.The origins of eroge began in the early 1980s, while the computer industry in Japan was struggling to define a computer standard with makers like NEC, Sharp, and Fujitsu competing against one another.The history of each medium itself, complicated based on the broad definition and usage.A well-known example is The Dream of the Fisherman's Wife which depicts a woman being pleasured by two octopuses.