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Means a person who is a (an) Lunatic, madman, strong, strength in Japanese.

In reference to the highly popular Mixed Martial Arts gear line Kyoujin Industries, meaning that Kyoujin Industries has of the Kyoujin source.
Most mixed martial arts fighters are known as a Kyoujin because when they fight, they are strong and also a lunatic in the cage / ring.
by Keopele May 16, 2008
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