Onigumo Onishi is the son of a Geisha and Happosai Hanju. However this fact is not known to many people in the village and is kept a secret by Happosai himself. It is so much a kept secret that not even Onigumo knows. This is why Onigumo goes by the name Onishi instead of Hanju. Onigumo is a talented swordsmen and a decent ninja. He has a talent for Ninjutsu, but prefers to throw it away and use Kenjuts instead.This aditude gained him the title of The Leaf Samurai as people consider him to be more of a actual samurai than a ninja.