Osei is the only daughter of a gambling boss from Tamioka. When her father was killed by Boss Gonzo she pretends to be a young man & sets out with her sword on the road to vengeance.She meets the blind swordsman Zatoichi along the way. He assesses her situation pretty clearly, & warns her that among yakuza, a fair fight isn't likely. He seems to imply she won't be able to achieve her aim, but so far as Osei is concerned, until she either kills Gonzo or dies trying, she won't live a normal life.
