Hentai Sex Videos are typically CGI (computer generated images), or classical drawn, and are done so to depict the unique fetishes and cartoon like depictions of the participants, this includes dramatically increased sizes of genetalia such as massive a penis, enlarged vagina, large clitoris, and extremely large breasts. The CGI also helps to create the overdramatic loss of fluids that is present in Hentai, such as lactating breasts, urination, or semen ejaculation as the point of orgasm.

Another reason for CGI is to circumvent the laws of child pornography, or other sexual laws such as rape, as the act is digital in nature. Lollicon, or shotocon which is the fascinartion with pre-pubescent girls and boys, is illegal in some countries even if animated in print or digital form. Canada, Sweded, Ireland, New Zealand, and Australia have all made lollicon and shotocon images or videos illegal classifying them as child pornography.

Rape, and rape fantasies can also be accomplished digitally, and can avoid legal problems surrounding using live actors who may or may not have offered their consent to filming.In addition the virtual technology allows the enlarged body parts as is part of the allure. Technically the rape here is digital, thus it does not involve real participants, and the voices are recorded and subsequently added in after.

An aspect that is common in Hentai is the dramatized size of the erogenous parts of the body. The female will generally speaking, have massively enlarged breasts that may or may not lactate depending on the type of film or fetish the film seeks to arouse.

The penis is another commonly enlarged part that elicits a greater response from the recipient, due to its increased girth and length. The amount of semen that is ejaculated is also greatly enhanced in hentai, and can involve having the semen shooting almost like a hose into the vagina and dripping out, or can shoot out covering almost the entire female.

A less common type of Hentai Video due its niche field is the animal scene or furries, where one of more of the CGI characters is an animal or animal hybrid with human shaped genetalia. The type of animals vary and can include bears, horses, felines, dogs, and even water borne mammals such as sharks or dolphins, but this is generally included in the furry genre altogether.