Daisuke Jimbo, a 43-year-old former police inspector from the Tokyo Metropolitan Police Department, admitted during his initial court hearing that he leaked investigation information to 'Natural', one of Japan's largest scout groups for the sex industry. He is charged with violating the Local Public Service Act, specifically the confidentiality duties mandated for public servants. In 2022, he sent images showing how the locations connected to the group appeared on police surveillance cameras and is alleged to have shared a list of over 20 locations affiliated with the group's investigation around July of the same year.

'Natural' operates as a scout group that illegally recruits women for sexual services, introducing them to various entertainment establishments across Japan. It is identified as one of the country's 'anonymous and fluid crime groups', claiming at least 1,500 members nationwide. Jimbo had been in charge of investigating 'Natural' in the organized crime unit of the Tokyo Metropolitan Police Department until his dismissal in December 2022, following the revelation of his misconduct.

The implications of this case are significant, given the increasing scrutiny on law enforcement's integrity in Japan. The leak not only undermines ongoing investigations but also raises concerns about systemic issues within police departments regarding their handling of sensitive information. The Tokyo Metropolitan Police have faced criticism for their methods and their ability to uphold the law amid accusations of complicity with criminal organizations in cases like these, emphasizing the need for thorough reviews and reforms in their protocols.