The Arrests
The Tokyo Metropolitan Police Department has arrested the operator of a "private-room massage" shop in Shinjuku's Okubo neighborhood and three Thai women who worked there. Police allege the shop sold sexual services out of an ordinary apartment in an area where sex businesses are banned. Police announced the arrests on October 23, 2026, and they were reported by the Mainichi Shimbun, the Sankei Shimbun, NTV, TBS and Fuji TV's FNN.
The operator is a 63-year-old Chinese national who lives in Hyakunincho, the area around JR Okubo Station. According to the Sankei and NTV, he ran the shop under the name OnlyOne. The three women are Thai nationals in their 30s, the Sankei reported. Officers from the department's Public Safety Division (hoan-ka) arrested all four in the act on the afternoon of October 21.
What Police Allege
The charge is a violation of the fūei-hō, the Businesses Affecting Public Morals Regulation Act, which lets prefectures ban sex businesses from whole districts. Police allege that around 2 p.m. on October 21, the shop gave a male customer a sexual service inside an apartment near Okubo Station, where such businesses may not operate. The Mainichi reported that the women were arrested on the same charge or on suspicion of aiding it.
Police say the shop was in the operator's own apartment. Three rooms were set up as "massage rooms," the Mainichi reported. He advertised it as a private-room massage shop, and TBS said it was presented as a Thai massage business. Police estimate it took in about ¥21.45 million (roughly $143,000) between its opening in July and the arrests. The broadcasters gave the figure as "more than ¥20 million."
The three women came to Japan on short-term visas and lived at the shop, according to the Sankei. Police believe they took the work to cover living costs and to pay off debts. Each told investigators that "an acquaintance" had introduced her to the shop.
Admissions and Denials
The operator denies the charge. "I don't know what the girls are doing inside the rooms," he told investigators, according to the Mainichi and NTV. The three women have admitted providing sexual services, police said.
The Wider Investigation
The Sankei reported that investigators believe a broker steered the women to the shop and are trying to identify that person. Police are also looking into whether the operator violated the Immigration Control and Refugee Recognition Act by promoting illegal work, since short-term visitors are not allowed to work in Japan.
This site has chosen not to name the suspects. None has been charged. Japanese law lets police and prosecutors hold a suspect for up to 23 days after arrest before deciding whether to indict, and all four are presumed innocent.
A Familiar Pattern
Tokyo police have spent much of 2026 going after "private-room massage" and "Thai massage" shops that operate in banned zones. In June, police arrested an operator in Asakusabashi and four people in Shinagawa in separate cases (report). In July, they arrested three people, among them a staffer at a foreign-trainee oversight body, over four shops in Ueno (report). They later re-arrested two suspects in that ring on immigration charges (report).
The most serious case involved a 12-year-old Thai girl who was made to serve customers at a massage shop in Yushima. In August, prosecutors asked for six years in prison for that shop's former operator (report).
Police have not linked the Okubo shop to any of those cases.
Sources: Mainichi Shimbun (October 23, 2026), for the October 23 announcement, the shop's location in Hyakunincho, the three rooms, the ¥21.45 million figure, the women's charges and the operator's statement; Sankei Shimbun (October 23, 2026), for the shop name, the time and place of the alleged offense, the women's ages, their short-term visas, live-in work, motives and statements, and the broker and immigration lines of inquiry; NTV (October 23, 2026), TBS (October 23, 2026) and FNN (October 24, 2026), for the four arrests, the July start, the sales estimate and the admissions and denial. All reports were accessed via Yahoo! News Japan. Dollar figures converted at about ¥150 to the dollar. Glossary: fūei-hō = Businesses Affecting Public Morals Regulation Act; "private-room massage" (koshitsu massāji) = a label sometimes used by unlicensed sex businesses posing as massage parlors.