The Verdict
A former professor at the University of Tokyo, Japan's most prestigious university, will avoid prison for taking bribes that included visits to Tokyo soaplands. A judge said the conduct "clearly damaged the integrity of his duties."
On October 22, the Tokyo District Court sentenced Sato Shinichi, 63, formerly of the university's Graduate School of Medicine, to two years in prison, suspended for three years. The court also ordered him to forfeit about 1.83 million yen (roughly $12,000), Kyodo News and TV Asahi (ANN) reported. The sentence matches what prosecutors had requested. The defense had asked for a suspended term, and the court granted it.
Sato pleaded guilty at his first hearing on September 25, as this site reported at the time. TV Asahi said he wore a dark navy suit in court and looked straight ahead as the sentence was read.
What He Was Convicted Of
The court found that from March 2023 to August 2024, Sato did favors for the former representative director of the Japan Cosmetic Association, a general incorporated association. The favors involved selecting and running joint research through an industry-funded research chair at the university. In return, he accepted entertainment on 28 occasions, worth a combined 1.83 million yen or so.
According to Naigai Times, the venues included a French restaurant in Yurakucho, high-end clubs in Ginza, and high-end soaplands in Yoshiwara, Tokyo's best-known soapland district. The paper also reported that the soapland visits were disguised as research through a contract for "sexually transmitted infection testing" services, backed by fabricated data. Other outlets reviewed for this article did not report that detail.
What the Judge Said
The Nikkei reported the reasoning of presiding Judge Ikegami Hiroshi. As head of the research chair, the judge said, Sato held "power over whether the chair survived," and he took the bribes habitually while colluding with the industry group.
The judge described the entertainment as "hedonistic and strongly sexual in nature." Had Sato considered his own influence and the future of the younger researchers under him, the judge said, the crime could have been avoided. His criminal responsibility "cannot be taken lightly."
The court also pointed to factors beyond the defendant. According to the Nikkei, the judge said the scheme lasted as long as it did partly because of a structural gap between a professor's authority and administrative oversight at the university. The judge added that the case also stemmed in part from a thinly funded company trying to exploit the university's name.
In court, Sato said that at the time he had been guilty of "complacency, carelessness and weakness" in his position, and he apologized for damaging public trust in public service. The defense cited the modest size of the bribe and the social penalties he had already paid. The university dismissed him for misconduct in January, after his arrest.
All Three Defendants Now Convicted
The verdict closes the last of the three prosecutions in the case. Under Japanese law, university employees of this kind are treated as public officials for bribery purposes.
| Defendant | Charge | Outcome |
|---|---|---|
| Former project associate professor under Sato | Bribery (receiving) | Suspended sentence; judgment final |
| Former representative director, Japan Cosmetic Association | Bribery (giving) | Suspended sentence; judgment final |
| Sato Shinichi, former professor (63) | Bribery (receiving) | Two years, suspended for three; forfeiture of about 1.83 million yen (Oct. 22) |
No appeal had been reported by October 24.
Where the Sex Industry Fits
Soaplands are licensed bathhouse-type businesses. Under the fūei-hō (the Businesses Affecting Public Morals Regulation Act), they are a storefront sex-related business category. The case did not turn on anything that happened inside the venues, and no operator was charged. The soaplands mattered as the form the bribe took. In Japanese corruption cases, settai (entertainment provided to an official) counts as a bribe just as cash does.
The case still lands in a hard year for the trade. Police in 2026 have repeatedly used the baishun bōshi-hō (the Anti-Prostitution Act) against soapland operators, including in Yoshiwara, where several shops were raided this month. The government is also weighing penalties for buyers of sex.
Sources: Kyodo News, October 22, 2026 (via San'in Chuo Shimpo, Niigata Nippo and Yahoo! News Japan), for the verdict, sentence, forfeiture, defendant's age and the sex-related entertainment. TV Asahi (ANN), October 22, 2026, for the sentence, the prosecution and defense requests, and the defendant's demeanor. Nikkei, October 22, 2026, for the presiding judge's name and reasoning, the defendant's statements at trial, the defense arguments and the final judgments against the co-defendants. Naigai Times, October 22, 2026, for the specific venues, the infection-testing contract cover story and the January disciplinary dismissal. Reporting on the forfeiture varies between about 1.8 million and about 1.83 million yen; this article uses the more precise figure. The dollar figure is an approximate conversion. The defendant was named by all outlets cited; the other two defendants are identified only by role. No allegation is made against any soapland or club operator. Glossary: fūei-hō = Businesses Affecting Public Morals Regulation Act; baishun bōshi-hō = Anti-Prostitution Act; settai = hospitality or entertainment provided to a client or official.