The most important thing to state at the outset: services built around actual high-school-age girls are illegal in Japan. They fall under the Child Welfare Act, the child prostitution and pornography law, and prefectural youth-protection ordinances, and are treated internationally as a form of child sexual exploitation. This entry describes JK business as a social problem and a human-rights concern, not as a service to be sought out.

JK business (Japanese: JKビジネス) is the umbrella term for trades that have joshi-kōsei (JK, “female high-school student”), or young women posing as them, attend to and accompany customers. It covers reflexology (massage) shops, walking services, cafés, viewing rooms, and photo sessions, all of which present themselves as non-sexual while in practice often forming a contact point with sexual touching or paid sex. It grew out of 1990s compensated dating and surfaced in urban centres from the late 2000s, before being made a target of regulation in 2017.

Overview

JK business spans store-based forms (JK refre, JK viewing shops), outdoor forms (JK walking), café forms (JK cafés, concept cafés), and photo-session forms. The shared structure is that the advertised service is non-sexual (massage, conversation, a walk), while “back options” involving sexual contact may be negotiated case by case. Because girls of high-school age may be recruited, the model carries a high risk of breaching the child pornography law, the Child Welfare Act, and labour standards. It is commonly called a “grey-zone” trade, but the grey applies only to the advertised surface; as a contact point for the sexual exploitation of minors it is regarded as gravely harmful.

Etymology

“JK” is youth slang from the romanised initials of joshi-kōsei, spreading through social media and message boards from the late 2000s. Initially a neutral abbreviation, it took on connotations of a commercially consumed image of young women as JK business grew. The phrase “JK business” entered press reporting around 2010 and was fixed in public usage through police youth-affairs documents and the reports of support groups, alongside offshoots such as “JK refre,” “JK walking,” and “JK café.”

History

The direct precursor was the compensated dating of the 1990s, in which young women and middle-aged men formed paid relationships through telephone clubs and, later, dating sites. The 1999 child prostitution and pornography law made paid sex with under-18s a criminal offence, and individual compensated dating partly shifted toward intermediary-organised forms.

From the late 2000s, shops in Akihabara offered reflexology, co-sleeping, and ear-cleaning by young women styled as schoolgirls, emerging as an offshoot of maid café culture. Around 2010, outdoor “JK walking” appeared in Ikebukuro, Akihabara, and Shinjuku; because it took place in public space, it drew particular concern.

In 2014 the Metropolitan Police stepped up enforcement, citing the Child Welfare Act, labour standards, and youth-development ordinances. The support group Colabo (led by Yumeno Nito) ran street outreach in Akihabara and Ikebukuro. In 2016 the UN Committee on the Elimination of Discrimination against Women expressed concern about the sexual exploitation of young women in Japan, including JK business and compensated dating.

In 2017 Tokyo revised its youth-development ordinance to create a new “specified opposite-sex hospitality business” category, banning the employment of under-18s in such work and the targeting of under-18 customers, requiring notification, and providing for suspension and penalties. Joint inspections sharply reduced the number of Tokyo establishments, and Aichi, Osaka, and Fukuoka followed with comparable measures.

After 2017 the open store trade contracted greatly. Street advertising and touting fell away, and “JK” disappeared from shop names. Activity partly migrated to look-alike forms avoiding the “JK” label (such as “JD,” meaning a female university student), to individual transactions via X (formerly Twitter), and to forms resembling papa-katsu apps. These are not “JK business” on the surface but continue the same structure of exploiting young women.

Structure of the trade

The main offshoots are JK refre (in-store massage and co-sleeping), JK walking (accompanying a customer outdoors), JK café (serving and conversation), JK viewing shops (observation through a magic mirror), and JK photo sessions. All present a non-sexual surface, but in some establishments “back options” of sexual contact are negotiated, and that reality is what falls under child-welfare and child-pornography regulation.

The employment structure combines short shifts, work in school uniform, stage names to avoid identification, and a nomination-and-request system, making it easy for young women to enter without grasping the risks. Recruitment ads emphasise “high pay,” “flexible hours,” and “no experience needed,” drawing in those facing family or financial difficulty. Support-group surveys note that a portion of entrants come from backgrounds of abuse, running away, or poverty.

Child welfare and human rights

JK business sits at the margin of the forms of child sexual exploitation prohibited by Article 34 of the Convention on the Rights of the Child. Even where the advertised service is non-sexual, the structure of consuming the bodies and appearance of young women as a commodity, the function as a gateway to paid sex, and the vulnerability of the work environment make it a grave concern from a child-protection standpoint.

Some view JK business as a form of human trafficking in Japan, a position reflected in the U.S. State Department’s Trafficking in Persons Report. Industry voices and some commentators counter that it is consensual labour and that over-regulation narrows young women’s options. From the support-group standpoint, formal “consent” alone cannot legitimise the trade given the economic and psychological situation of those involved, and child protection must take priority. Groups such as Colabo, the BOND Project, and PAPS have run outreach, counselling, and shelter operations, framing JK business not as deviant employment but as a violation of children’s rights and a structural social problem.

Regulation

Laws and ordinances applied to JK business include the child prostitution and pornography law, Article 34 of the Child Welfare Act (banning causing a child to commit indecent acts), labour standards on night work by minors, the Amusement Business Act, and prefectural youth-development and nuisance-prevention ordinances. National child-protection regimes everywhere criminalise the commercial sexual exploitation of minors; the distinctive feature noted internationally is the use of a grey zone between a non-sexual surface and an exploitative reality.

In adult creative works, depicting actual high-school-age girls sexually falls under the child pornography law, and substituting settings of “18 and over” is standard industry practice.

See also

• Compensated dating (enjo kōsai)
• Papa-katsu
• Dating sites (deai-kei)
• Fuzoku (sex industry)
• Child pornography law
• Tachinbo (street prostitution)
• AV protection law