JAV is Japanese Adult Video .
Many pornographic videos (called “adult video” or “AV” in Japan or sometimes “Japanese adult video” or “JAV” outside of it) have titles that may suggest that they use minors or show the recording of an actual crime; but titles that are circulated with the approval of Eirin, the Japanese film industry’s regulatory body, are in full compliance with, and do not break, any Japanese laws. A common ploy is to have a part of a title replaced with a character, or to use a phonetically similar neologism. For example, a video about “19 years old girls Sex Party!” may be sold with a title like “1X years old Girls Sex Party!”. The word Joshikousei (女子高生), lit. “High school girl,” cannot be used as it would suggest a girl of 17 years or younger, who cannot legally act in a pornographic video. The homonymic neologism Joshikousei (女子校生), which can mean a “girl student,” is used in many titles to promote the product without breaking censorship laws. This fact may be seen in popular places of Japan such as Akihabara or Den Den Town at Tokyo and Osaka respectively.
Japanese AV also caters to many more fetishes than might be imagined (or thought legal) by non-Japanese. Schoolgirl or uniform themed AV dovetails with the aforementioned “non-consensual” genre—rape (レイプ reipu)—are common. SM, rope bondage, bestiality, virgins, internal male climax or cream-pies (中出し nakadashi), lesbians (レズrezu), along with more eccentric fetishes (soap, office ladies, game shows) are all covered.