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Panchira (パンチラ) is an expression used by Japanese women to warn each other that their underwear is visible; the term carries risqué connotations similar to the phrase "your slip is showing" in English usage. The word is a portmanteau of "panty" (パンティー pantī ) and chira, the Japanese sound symbolism representing a glance or glimpse. It differs from the more general term "upskirt" in that panchira specifies the presence of underpants (the absence of which would more accurately be described as ノーパン; nōpan).
In anime and manga, panchira usually refers to a panty-shot, a visual convention used extensively by Japanese artists and animators since the early sixties. According to Japanese sources, the convention probably started with Machiko Hasegawa's popular comic strip Sazae-san, whose character designs for Wakame Isono incorporated an improbably brief hemline. The practice was later transferred to animation when Osamu Tezuka's Astro Boy was adapted for television in 1963. Confined mainly to harmless children's series throughout the remainder of the decade, panchira took on more overtly fetishistic elements during the early seventies. From that point on, panchira became linked with sexual humor. It is particularly prevalent in so-called shōnen manga.
As noted below, the development of panchira in Japanese popular culture has been analyzed by a number of American and Japanese writers. Many observers link the phenomenon to the Westernization of Japan following World War II. During the occupation, fashions, ideas, and media previously unavailable were accessed by the local population, leading to a slight relaxing of earlier taboos. Western-style clothing (including women's underwear) gained popularity in the post-war period, reinforced through numerous media outlets - magazines, newspapers, films, journals, and comics.
At least one Japanese source traces the beginnings of panchira to the release of The Seven Year Itch in 1955. The media coverage surrounding Marilyn Monroe's iconic scene fueled the emerging Japanese craze. According to architectural historian Shoichi Inoue, the practice of "scoring" a glimpse up young women's skirts became extremely popular around this period; "Magazines of the time have articles telling the best places where panties could be viewed".
By the late 1960s, panchira had spread to the mainstream comic industry, as fledgling manga artists such as Go Nagai began exploring sexual imagery in boy's comics (shōnen manga). It is significant to note the emergence of adult themes in what was then considered a juvenile medium. Millegan argues that the ecchi genre of the 1970s rose to fill a void left by the decline of Osaka's lending library network:
Japanese comics did not seriously begin exploring erotic themes until the sixties, with the collapse of the pay-library system (largely brought about by the unexpected success of cheap comic magazines such as Kodansha Publishing's Shōnen Magazine). Artists working for the pay-library system had already pioneered the depiction of graphic violence, and had proudly declared that they were drawing gekiga ("drama pictures"), not mere comics. In the search for realism (and readers), it was inevitable that sex would soon make an appearance.
As the Japanese comics market diversified, sex spread beyond the gekiga to just about every conceivable niche in the marketplace. The gekiga continued their realistic and often violent depictions, but the other major divisions in the manga world developed their own approach. Boy's comics began to explore "cute" sex, mainly consisting of panchira ("panty shots") and girls in showers.
Academic perspectives 
Although there are few academic studies dealing specifically with panchira, the subject has been touched on by several writers under the broader context of the male gaze. From the Western perspective, panchira is characterized by the sexual stereotyping inherent in patriarchal culture. Anne Allison makes reference to the convention in Permitted and Prohibited Desires, theorizing that the exposure of women's (or girls') underwear in ero-manga is constructed as an "immobilizing glance", in the sense that panchira is usually presented as a tableau in which the (female) object of desire is 'petrified' by the male gaze.
She further postulates that this 'glance' is generally depicted as transgressive: the audience is permitted a glimpse of the female body (partially) unclothed, but it is always framed as a forbidden action. This prohibitive tableau permeates the entire genre, as virtually all ero-manga follows the same formula of transgression and immobilization.
Similarly, Anne Cooper-Chen states that the endlessly repeated image "of a male gazing at a female's panty clad crotch" represent an archetypal manga panel. She supports Allison's view that women/girls portrayed in their underwear (or naked) is a common motif in Japanese comics, and is most frequently accompanied by a masculine "viewer" whose voyeuristic presence is indicative of the male gaze. However, in contrast to Allison, Cooper-Chen's observations are not confined only to the ero market. Rather, she argues that the dominant trope of frustrated desire and sexual violence may be extended to the manga mainstream.
A more generalized perspective is provided by Mio Bryce's analysis of classroom imagery in Japanese comics. Using Go Nagai's Harenchi Gakuen as a prime example, Bryce notes that Nagai's storylines challenged long-standing social values by ridiculing traditional authority figures. Teachers in Nagai's manga were portrayed as deviants and perverts, engaging in various forms of aggressively voyeuristic behavior towards their female students. In this regard, panchira was employed as a form of social satire, voicing a general mistrust of authoritarian regimes.
In much the same vein, Bouissou states that Harenchi Gakuen 'smashed' the Japanese taboo against eroticism in children's comics, indicative of the rapidly changing cultural attitudes endemic to late 60s Japan. Although the eroticism was confined mainly to panchira and soft-core cartoon nudity, the manga's impact was felt all across the country. As Bouissou points out, the publication of Harenchi Gakuen sparked a "nationwide boom of skato meguri (to roll up the girl's skirt)".
Jonathan Abel's work on the unmentionables of Japanese film argues that the cultivation of the underwear fetish through roman poruno films[clarification needed] after a police seizure may have first been evidence of covering up, but rapidly became a signifier of that which could never be attained. Abel's psychoanalytical approach then calls for the use of "panchira" as a term for eroticization of the invisible.
See also 
- Aggrawal, Anil (2008). Forensic and Medico-Legal Aspects of Sexual Crimes and Unusual Sexual Practices. CRC Press. p. 134. ISBN 978-1-4200-4308-2.
- Mutranowski, Bill (2003). You Know You've Been in Japan Too Long... Tuttle Publishing. pp. 109&120. ISBN 978-0-8048-3380-6.
- Akihara, Koji, and Takekuma, Kentaro. Even a Monkey Can Draw Manga. VIZ Media LLC; 1st edition, 2002.
- Koji and Takekuma, Even a Monkey Can Draw Manga.
- Millegan, Kris. "Sex in Manga", Comics Journal, 1999.
- Botting, Geoff et al. Tabloid Tokyo: 101 Tales of Sex, Crime and the Bizarre from Japan's Wild Weeklies. Kodansha Inc (2005) p. 16. It should be noted, however, that Botting also confirms that a "lingerie subculture" had been established during the early Showa era. Largely based around fetishistic photography, this early variant was considered socially unacceptable due the return to traditional Japanese values that took place throughout the 1930s. Strong anti-Western sentiment hastened the subculture's disappearance during the interwar period, as anything suggestive of Western sexual attitudes was regarded as degenerate.
- Shōichi, Inoue. パンツが見える。: 羞恥心の現代史 ("The Underpants are visible: the history of being ashamed"). Asahi shimbun, 2002.
- Botting et al, p. 16.
- Millegan, Kris. '"Sex in Manga", Comics Journal, 1999.
- Millegan, '"Sex in Manga".
- Allison, Anne. Permitted and Prohibited Desires: Mothers, Comics, and Censorship in Japan (1996).
- Allison, Permitted and Prohibited Desires.
- Cooper-Chen, Anne: "The Dominant Trope: Sex, Violence and Hierarchy in Japanese Comics for Men", in Comics and Ideology, McAllister et al, 2001, p. 105
- Cooper-Chen, p. 105.
- Bryce, Mio: 'School' in Japanese Children's lives depicted in Manga, p 10.
- Bouissou, Jean-Marie: "Manga goes Global." Paper presented at the University of Sheffield, March, 1998 (p.17)
- Jonathan E. Abel, "Packaging Desires: The Unmentionables of Japanese Film,” Perversion and Modern Japan: Psychoanalysis, Literature, Culture edited by Keith Vincent and Nina Cornyetz, Routledge, 2009. 272-307.