Heintai je japanska reč koja ima značenje „seksualna perverzija“, ali i označava japanske pornografske mange, anime i kompjuterske igre. Heintai mange i anime daju mogućnost da se ostvare seksualne fantazije koje je nemoguće dobiti uživo, bilo to da su fizički nemoguće, društveno neprihvatljive ili prkose zakonskim i socijalnim normama. Postoje razni oblici ekstremnim prikaza u Hetai mangama i anime filmovima među kojima su silovanje, seks sa monstrumima sa pipcima, ekstremni sado-mazohizam, seks sa životinjama, pedofilija, seks sa trudnicama, incest, i mnogi drugi fetiši. Hentai je izuzetno popularan pojam, što dokazuje i pretraživač Google koji nudi preko 57 miliona stranica koje sadrže ovaj pojam.

Zanrovi


* Bakunyū, the depiction of women with large breasts. Literally translated to "bursting breasts".[19]
* Futanari, depictions of hermaphrodites or transsexuals that have both phallic genitalia (penis with scrotum, only a penile shaft, or an enlarged clitoris) and vaginal genitalia, or, alternately, a feminine hourglass shape including breasts combined with a penis and scrotum.
* Incest, sexual activity with legal family members; noticeably seen in The Sagara Family, a hentai computer game.
* Lolicon, depicts prepubescent or preadolescent girls.
* Omorashi, in which individuals struggle with a full bladder before finally wetting themselves (also known as watersports).
* Shotacon, the depiction of young boys, either with other young boys or older men, or depicting young boys with older women (known as "straight shota" in western jargon).
* Tentacle erotica, the depiction of tentacled creatures and sometimes monsters (fictional imaginative or otherwise, also includes alien-like creatures) engaging in sex or rape with girls and, less often, men.