Kojiro takes the form of a tall and muscular old man with silver hair, wrinkled skin, sharp eyebrows and brown colored eyes. Kojiro appears to be a carefree and confident but lazy individual. Kojiro is actually a diligent and hardworking person, as seen when he struggled constantly trying to defeat various swordsmen but managed to surpassed them in due time through rigorous training. He has a great fighting spirit and enjoys fighting against powerful opponents, always respecting them.