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Whenever Hiruma wants somebody to do something for him, he pulls out his
little black book full of black mail material which has information on
seemingly everybody.

I know he started the book to get approval to start the American Football club
but is it ever explained how or where he gets all this information? He seems
to have dirt on pretty much everybody in Japan.


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2013-02-07T13:29:01.607
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2013-02-07T13:42:52.127
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eyeshield-21
How does Hiruma get all the information in his black book?


The information were gathered using hacked cameras, mostly in cellphones. The
hacked network was that great, that he could get information of nearly
anything in Tokyo, and he never stopped that network.

Funfact:

> In one of Q&A column, it is revealed that the book was actually blank- All
> the information lies within Hiruma's brain, and the book only serves as a
> threat tool.

Source: [Eyeshield 21 Wiki](http://eyeshield21.wikia.com/wiki/Book_of_Threats)


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