Hentai fetishes - Futanari and Tentacle art

Hentai is a Japanese word that used when referring to sexually explicit or pornographic doujin, animation and computer games. The word hentai is mostly used to mean – sexual perverted.
Hentai anime features many genres like heterosexual relationships are known as yaoi, and yuri which focus on the woman homosexual relationships. There are much more other different sub-niches - bakunyu, the depiction of women with big bosoms, futanari, depictions of hermaphrodites, tentacle sex, the depiction of tentacled creatures and sometimes monsters. Let’s talk about last two in details.
Tentacle sex is a bizarre niche of animation and manga in which women are catched and penetrated by weird monstres with tentacles. Japanese shokushu goukan is a concept found in many horror hentai titles, where various tentacled monsters (usually fictional monsters) catch or otherwise penetrate women, futanari and, less commonly, male. This niche is quite popular in Japanese sex fantasies.

Tentacle erotica has roots in classical asian art. In painting ‘The Dream of the Fisherman’s Wife’, a nude woman is graphically attacked by a pair of octopuses.

Tentacle sex has a strong influence at the hentai world. Lot of hentai series and manga have been turned into live action tentacle. Many well known AV idols like Maria Ozawa, Haruka Sanada, Sasa Handa, Yuka Osawa acts in famous Touch of Tentacle Orgasm live action tentacle series.
Other popular Japanese genre is futanari. This fetish depicts hermaphrodite characters. Other common terms used to describe futanari characters are dickgirls or hentai shemales (but terms dickgirl and shemale is wrong). Futanari, along with term newhalf, are more common terms.
Originally futanari referred to any hentai animation and videos character that having both male and woman sexual organs.
The term futanari is usually reserved for characters painted in Japanese hentai anime style. Western style is usually simply referred to as futanari dickgirls.