Hunter x Hunter is/was an anime in japan, and a manga that hasnt been licenced america... its by the same person as Yuu Yuu Hakasho and is about a kid thats trying to find his father by becoming a hunter (taking the hunters exam), learning the properties of nen*, and learning how to control it.
nen is an aura that flows from the body, a life energy. there are different aura's: reinforcement, transformation, emission, specialization, materialization.. and thats all i remember. to figure out what type you are a person concentrates on a glass of water with a leaf on top and changes in characteristics (taste, color, amount, etc.) should determine what kind you are.
im reading the scanlations and its really amusing. thats all i can describe... the afternoon delight scene from anchorman is looping in my brain...