The immunity of the intelligence asset is not necessarily absolute, as there is no written paper. It is a result of the common practice and necessity that these assets are deployed in the future spy operation.
This free-hand is also applicable to the money laundering case. Their basic logic is that they can control these crimes when they hire those criminals as their assets rather than prosecuting them. However, this is just an official logic and the reality is that they have hired them to frame their potential targets to expand their intelligence network. In this way, the CIA or Japanese police intelligence can expand their power.
Contrarily saying, if you deny an authority of the spy, you will be a target of them as far as alive and they actually have the capability to render you harmless. That has been the reality. I still have no idea why they believe what they are doing is right, but moreover, no idea why they have still stayed at the public position.
Furthermore, I have no idea why the immunity is provided to criminals just because they have worked to the intelligence organizations. As far as I know, there were huge financial crimes in Japan, some of which were revealed in 2012 to be prosecuted, though there were others not prosecuted in the same manner despite its seriousness.
There should be another reason, a corruption. The financial crimes were so different from others in terms of the amount of money. As you can see, I wrote several cases until here, some of which went beyond billion US dollar. There were numerous illegal transactions trading at tens of thousand dollars, which has been a nature of the financial crimes.
This money should have been provided to the CIA and Japanese police, though I had no proof of this corruption. I was pretty much sure their whole system was wrong, but there was no proof that the intelligence officers got a personal gain from these immunities.
Sadly, these intelligence officers are in charge of these investigations including corruption cases, hence it is quite improbable to make these cases publicly prosecuted.
The immunity of intelligence assets has been apparently abused to motivate more crimes as they have free hands. This wrong system should have created numerous corruptions which are likely one of the reasons why they would like to run an operation against me to cover the reality I have known.