Kirk here. I reported about this earlier. Here's a follow-up.

--- ChatGPT translation ---
The Kumamoto Nichinichi Shimbun reported that, when investigating experts and other knowledgeable individuals in Japan, the Field Intelligence Unit collected information not only about their ideological beliefs, including their “patriotism” and “attitudes toward the Self-Defense Forces,” but also personal information such as their “sexual preferences” and “relationships with members of the opposite sex.” It compiled this information into reports covering several thousand people.

Defense Minister Koizumi said, “I must refrain from commenting on the details of the Field Intelligence Unit’s information-gathering activities, as doing so could risk revealing its intelligence-gathering capabilities.” In response to claims that the minister had not been briefed on these activities, he added, “The necessary information has been reported.”
--- end translation ---

It's not often that the Kumanichi gets a national scoop like this. I can only imagine that local university faculty were questioned and that the matter got picked up somehow by the paper.