In the 1990s, the intensity of interrogations by the Japanese police was unimaginable to later generations, and the severity displayed to the outside world was just the tip of the iceberg.
In order to maximize the destruction of the yakuza, the criminal police used every possible means— the current cases of forced confessions we see are mostly misjudgments against lawful citizens, while cases of coerced confessions against the yakuza were virtually never made public.
To be honest, there wasn't even a single case reported in the newspapers.
One can imagine how fierce the interrogation battles were between the police and the yakuza in such a scenario.
