Okuru

An Ainu warrior whose village was struck by an epidemic and torched by the Matsumae clan Han. Overcome with rage, he killed the official who authorized the burning. He was arrested and incarcerated, but escaped before he could be executed. His weapon is unique, a modified crossbow, called a Chu-Ko-Nu, that can repeatedly fire bolts. He mistakes Mugen as part of the Matsumae Han (who, ironically, later mistake Mugen for Okuru) and attacks him. (Source: Wikipedia)