In 1996 the First World Congress against Commercial Sexual Exploitation of Children met in Stockholm, and Japan drew international criticism as a leading demand and supply country for child prostitution. “Sex tours” by Japanese men to Southeast Asia were reported repeatedly by NGOs, international bodies, and the Japanese press, exposing the gaps in domestic law. Against this backdrop a Diet-member bill became law in 1999.

The Child-Prostitution Punishment Act is one common name for the Act on Punishment of Activities Relating to Child Prostitution and Child Pornography, and the Protection of Children (Act No. 52 of 1999), promulgated 26 May 1999 and in force 1 November 1999. It criminalises “child prostitution”, the giving of consideration for sexual conduct with a person under 18, alongside the production, provision, and possession of child pornography, and aims to protect children from sexual exploitation and abuse. This article focuses on the child-prostitution provisions: their structure, background, extraterritorial reach, and international comparison. The detailed child-pornography provisions are treated in the child-pornography law article.

Overview

The Act has two central targets. “Child prostitution” (Article 4) is having sexual conduct with a person under 18 in exchange for, or a promise of, consideration. “Child pornography” (Article 2(3)) is a visual record depicting the sexual posture of a person under 18. The Act further punishes intermediation, solicitation, and provision of premises (Articles 5–8), and provides for the protection of victim children and for care of their physical and mental state in investigation and trial. It sits at the core of Japan’s child-protection criminal law, complementing the Penal Code’s non-consensual sexual intercourse offence and the Anti-Prostitution Law.

Background

The 1989 UN Convention on the Rights of the Child (ratified by Japan in 1994) framed the protective obligation; Article 34 requires states to protect children from all forms of sexual exploitation and abuse. The decisive trigger was the 1996 Stockholm Congress, whose Declaration and Agenda for Action called for national legislation across child prostitution, child pornography, and child trafficking.

In the 1990s Japan lacked criminal regulation taking child protection as its direct interest, and faced serious international criticism. Sexual conduct with children was regulated only piecemeal through Penal Code Article 175, the Child Welfare Act, and prefectural lewd-conduct ordinances. Child prostitution by Japanese men in Thailand, the Philippines, and elsewhere had been denounced through the 1980s and 1990s as “sex tourism”; ECPAT established a Japan chapter in 1995 and intensified domestic lobbying. The bill passed both chambers unanimously, the proposers including cross-party women legislators (Moriyama Mayumi, Noda Seiko, Komiyama Yoko).

The elements

A “child” is a person under 18 (Article 2(1)), an age category independent of the civil-law age of majority (18 since 2022) and the Penal Code age of consent (16 after 2023). “Child prostitution” (Article 2(2)) is having sexual conduct with a child in exchange for consideration given to the child, an intermediary, the child’s guardian, or a person controlling the child; “consideration” is not limited to money but covers goods, services, and benefits. Child prostitution is punished by up to five years’ imprisonment or a fine up to three million yen (Article 4); the child victim is not punished, being the protected interest.

Surrounding acts carry heavier penalties: intermediation (Article 5) and solicitation (Article 6) of child prostitution, child-pornography production (Article 7), and trafficking for child-prostitution purposes (Article 8). Article 10 provides extraterritorial reach following Penal Code Article 3 (crimes by nationals abroad), so Japan’s jurisdiction extends to child prostitution committed abroad by Japanese nationals, embodying the original legislative aim of reaching “sex tourism” in Southeast Asia.

Amendment history

The 2004 amendment raised penalties for provision offences, addressed internet distribution, and broadened possession-for-provision offences; the title gained the words “regulation and”. The 2014 amendment turned chiefly on whether to criminalise simple possession of child pornography, which it did (“for the purpose of satisfying one’s own sexual curiosity”, up to one year’s imprisonment or a one-million-yen fine), with the penalty provision taking effect after a one-year notice period on 15 July 2015. The child-prostitution provisions themselves were largely unchanged.

International comparison and debate

In the United States the PROTECT Act 2003 created an extraterritorial offence (18 U.S.C. § 2423(c)) for US nationals having sexual conduct abroad with persons under 18, regardless of payment, a broader reach than Japan’s; Ashcroft v. Free Speech Coalition (2002) held regulation of wholly fictional child pornography unconstitutional, fixing the real-child protective principle. The UK Sexual Offences Act 2003 (Articles 47ff.) punishes paid sexual conduct with persons under 18 as child sexual exploitation, alongside the Protection of Children Act 1978 and the Coroners and Justice Act 2009, the latter reaching some fictional depiction. The Optional Protocol to the Convention on the Rights of the Child on the sale of children, child prostitution and child pornography (in force 2002; Japan 2005) requires criminalisation across all three areas.

The relation to freedom of expression recurs at each amendment, especially over whether to include manga, anime, and CG; the 2014 supplementary Article 2 confirmed that expression not infringing children’s rights stays outside regulation. The Act excludes the child from punishment and treats the child as protected interest, raising the difficult question of how to treat ostensibly voluntary paid sexual conduct by adolescents (the modern “compensated dating” and “papa-katsu” phenomena), where most scholars support punishment on grounds of structural asymmetry. The Act and the Anti-Prostitution Law differ in protected interest and structure but function complementarily in practice.

See also

• Child-pornography law
• Anti-Prostitution Law
• Non-consensual sexual intercourse offence
• Age of consent
• Penal Code Article 175
• Freedom of expression