Japanese authorities arrested Masao Ito, a 53-year-old [1] career official with the Ministry of Economy, Trade and Industry, on Thursday.
The arrest of a high-ranking "Kasumigaseki elite" highlights the potential for severe personal harassment and digital impersonation within the Japanese civil service.
Investigators said Ito used computers at a manga cafe in Tokyo's Shibuya Ward to carry out the crimes in March 2026 [1]. He allegedly created fake profiles on multiple dating websites to impersonate a female acquaintance [1], [2].
According to police, Ito sent dozens of defamatory messages [1] intended to damage the woman's reputation. A police investigator said Ito has acknowledged impersonating the woman and sending emails with content that led to defamation [2].
The impact on the victim was immediate and severe. In less than 20 days, the woman received more than 100 harassing phone calls [1] as a result of the messages.
The Ministry of Economy, Trade and Industry issued a statement regarding the incident. "It is truly regrettable. We will cooperate fully with the investigation," a ministry spokesperson said [3].
Ito's status as a career bureaucrat means he held a position of significant administrative power within the national government. The use of a public internet cafe to mask his identity suggests a deliberate attempt to avoid detection while targeting the victim.
“The woman received more than 100 harassing phone calls in less than 20 days.”
This case underscores the vulnerability of individuals to targeted digital harassment and the ability of high-ranking officials to leverage anonymity through public infrastructure like manga cafes. The arrest of a career bureaucrat for such a personal crime may lead to increased scrutiny regarding the conduct and psychological stability of officials within Japan's influential Kasumigaseki administrative district.


