() is a term in Japanese pornography for a facial expression of characters (usually women) during sex, typically with rolling or crossed eyes, protruding tongue, and slightly reddened face, to show enjoyment or ecstasy. The style is often used in erotic manga, anime (), and video games (). Etymology The first part of the term, (katakana: ), is an abbreviation for (), an onomatopoeia for 'pant' or 'moan'. The second part, or (), means 'face'. Thus, can be interpreted as 'moaning or panting face'. Many other terms have been coined for the facial expressions made at the moment of orgasm. One of these is () meaning 'coming [i.e., orgasmic] face'. Others are acmegao (アクメ顔) from the French loanword acmé (orgasm), and yogarigao (よがり顔) for "satisfaction face". Description Typical characteristics are rolled or crossed eyes, a hanging tongue, and flushed cheeks. A character's overall face shape may also be distorted in scenes.An face of various levels of distortion is used to depict different grades of sexual arousal. indicates that the pleasure experienced is so intense that the character loses control of their facial expression. While is often used in pornographic manga, anime, and videogames, it is not exclusively a term of . A number of non-adult works feature faces. In The History of Hentai Manga, hentai manga researcher Kimi Rito states that follow three particular traits that set them apart from other ikigao (orgasm face) expressions: History Also known as the O-Face, the term dates at least as far back as the early 1990s. Pornographic magazines used the word to describe the facial expressions of female live-action porn actresses during orgasm. In the same context, was used in some postings at 2Channel and its sister community for adult content, BBSPink, as well as in pornographic videos at adult e-commerce platforms in the early 2000s. In the midst of the 2000s, use of the term increased, and the drawing style became rather conventionalized and started spreading throughout the culture. In 2008, the first -themed comics anthology, A-H-E, was released. In the 2010s, major publishers produced more -themed comic anthologies. By that time, the facial expression was featured in regular pornographic videos during the popularization of fetishes in the real-life sex industry. -like exaggerated facial expressions are also sometimes featured in other anime and manga works, in a non-sexual context. In September 2016, an " challenge" meme spread on social media websites, mostly