Hentai fetishes - Futanari and Tentacle art

Hentai is a Japanese word that used when referring to sexually explicit or pornographic doujin, animation and PC games. The word hentai is commonly used to mean – sexual distorted.
Hentai anime features many niches like heterosexual interactions are known as yaoi, and yuri which focus on the girls homosexual interactions. There are much more other different sub-genres - bakunyu, the depiction of women with gigant breasts, futanaries, depictions of hermaphrodites, tentacle sex, the depiction of tentacled creations and sometimes monsters. Let’s talk about last two in details.
Tentacle sex is a bizarre genre of animation and doujinshi in which women are attacked and penetrated by weird creatures with tentacles. Japanese shokushu goukan is a concept found in many horror hentai titles, where various tentacled monsters (usually fictional creatures) attack or otherwise penetrate women, futanari and, less commonly, men. This niche is quite popular in Japanese erotica.

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

Tentacle erotica has a strong influence at the anime world. Lot of hentai series and manga have been turned into live action tentacle movies. Many famous AV idols like Maria Ozawa, Haruka Sanada, Sasa Handa, Yuka Osawa acts in well known Touch of Tentacle Orgasm live action tentacle series.
Other famous 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 movies character that having both man and female sexual organs.
The term futanari is usually reserved for characters drawn in Japanese hentai anime style. Western art is usually simply referred to as futanari dickgirls.