If there seriously is Japanese Kung Fu somebody tell me . It would be Karate right??

There are Japanese schools that are interpretations of Chinese Kung Fu (really, Wu Shu) founded by Japanese nationals who have studied Kung Fu from Chinese instructors. You see them in places with big Chinatowns, like Yokohama and Kobe. They tend to be very small, however, and often fold quite quickly. The cultural pressure to study the Japanese arts is great.
I only do Shorinji Kempo for kicks.