The president of Toei company Shigeru Okada asked Sadao Nakajima who directed past 2 Futaro Yamada's Kunoichi films to direct the film but he declined the offer.
[4][5] Mumyō Kotarō killed his betrayed fiancé Orie and He flees to Utsunomiya.
On his way he happens to saves Chisaka Hyōbu's daughter Oyu(She is exactly like Orie.)
Chisaka was just trying to stop Forty-seven rōnin's revenge against Kira Kōzuke no suke by female ninja's sexual entrapment.
Kotarō accepts the request on condition of marriage to Oyu.