How the Case Unfolded
On June 18, 2026, the Fukuoka Prefectural Police re-arrested two people—a man (22), a gang member affiliated with the Kudo-kai, a designated organized-crime group of special danger, and an unemployed man (21)—on suspicion of violating the Anti-Prostitution Act, for brokering prostitution by an underage girl. The matter came to light in reporting by RKB Mainichi Broadcasting and others.
The re-arrest allegation is that, in September 2025, in conspiracy with six minors, they had a first-year high-school girl (under 18) at a hotel in Kokurakita Ward, Kitakyushu City, engage in sexual intercourse and the like with a man in his 20s, knowing she was under 18, and brokered prostitution. The prefectural police have not disclosed the two men's pleas.
The two had already been arrested in May 2026 as well, on allegations including brokering prostitution by a then-15-year-old female junior-high-school student in September 2025. This is part of a series of crackdowns following that one, and it confirms that the girls who were victimized number more than one.
A Crackdown That Proceeded in Stages
Taking the reporting together, this case has been built up through crackdowns over several rounds.
- January 2026: Six people, including a 19-year-old man believed to be an operative, were arrested for soliciting girls via social media and making them engage in prostitution.
- May 2026 (the 27th): Three people, including Kudo-kai-affiliated gang members, were arrested on suspicion of violating the Child Welfare Act (causing lewd conduct) and other offenses, for brokering prostitution by a third-year junior-high-school girl (Kyodo News reporting).
- June 18, 2026: Regarding the brokering involving the first-year high-school girl, two people including a gang member were re-arrested on suspicion of violating the Anti-Prostitution Act.
According to Kyodo News reporting, the group is believed to have conspired with about nine people and, from September 2025 to January 2026, made about 10 underage women engage in prostitution, taking in roughly 2 million yen each month. The charges differ by stage of arrest—violation of the Child Welfare Act, violation of the Anti-Prostitution Act, and so on—and appear to be divided up as the investigation progresses.
The Involvement of "Tokuryu" Emerges
The Fukuoka Prefectural Police believe that an anonymous, fluid crime group (Tokuryu) was involved in this case, and are examining the reality in detail.
Tokuryu is a police term for groups that are loosely connected via social media and highly confidential communication apps, and that carry out crimes without having a fixed organizational structure. With the roles of director, solicitor, and on-site operative divided, and members fluidly replaced, the whole picture is said to be hard to grasp. In this case too, while organized-crime gang members were involved, teenage minors are said to have joined as operatives, suggesting such a division-of-labor structure.
The Parties and the Structure of the Harm
To the extent that can be confirmed from the reporting, those whose involvement is pointed out are persons and roles such as the following.
| Position | Content per reporting |
|---|---|
| Core members | A gang member (22) affiliated with the Kudo-kai, a designated organized-crime group of special danger, and others |
| Layer said to be operatives | Teenage minors in their late teens said to have been involved in social-media solicitation and the like |
| Victims | A then-15-year-old junior-high-school girl, a then-first-year high-school girl, and several other minors |
| Place of brokering | Prostitution at hotels and the like in Kitakyushu City |
The point that the victims were all girls under 18 is reported as the viciousness of this case. Note that much remains undetermined regarding individual statements, pleas, and the specific chain of command within the organization, as the investigation is ongoing.
Background: Sexual Exploitation Where Organized Crime and Tokuryu Intersect
The Kudo-kai is the only organization in the country designated as a "designated organized-crime group of special danger." Known for assaults on ordinary citizens and businesses, it is an organization against which the police authorities have continued intensive enforcement over many years. That a member of its affiliated organization is suspected of trying to obtain funds in the form of minor prostitution draws attention as showing a change in organized crime's sources of funds.
In recent years, the National Police Agency has positioned the adult-entertainment and scouting businesses as one of Tokuryu's powerful sources of funds. While conventional organized-crime groups scale back their overt activity, a method has reportedly spread of using young people recruited via social media as operatives and earning through sexual exploitation. This case can be called an example that made visible a scene where a traditional organized-crime organization and a Tokuryu-type network cross.
Sexual exploitation of minors is clearly illegal under the Child Welfare Act, the Anti-Prostitution Act, and other laws, regardless of whether the person consents, and in recent years both crackdowns and sentencing have tended to grow stricter. The method of approaching girls via social media and luring them in with "you can earn easily" is repeated in various places, and how to cut off the entry point of solicitation remains a challenge.
This article is compiled from reporting by RKB Mainichi Broadcasting, Kyodo News, FBS Fukuoka Broadcasting, KBC Kyushu Asahi Broadcasting (all including Yahoo! News distribution), and others. The arrest allegations are at the stage of announcement by the investigative agencies, and matters that are not finalized, such as pleas and the details of the case, are described avoiding speculation.