Takeshi Hongo is a promising young man with a passion for motorcycle racing. However, his dreams are suddenly ruined when he gets kidnapped by Shocker, the evil secret organization planning to dominate the world. After being remodeled into a cyborg, Takeshi escapes and swears to protect the world from the inhuman monsters.
A young girl named Oichi is abandoned by her mother and blinded by a lightning strike. When her guardian is killed, she learns to wield a sword from a traveling ronin. As she develops into a master swordsman, her profession becomes that of a bounty hunter. Many test her sword and many die by her skills. She travels throughout the countryside to seek her mother and her revenge.
Oichi may have met her match as she vies against the evil beauty that has set her sights on destroying her. She must face numerous other challenges before confronting her greatest rival. While longing to live and love like other women, she realizes that she can never have a normal life, her sword which she holds on to like a security blanket will always come between her and such a life...
