Watch Out, Crimson Bat! (1969)
Original title: めくらのお市 みだれ笠
Watch Out, Crimson Bat! is a 1969 Japanese-language drama movie directed by Hirokazu Ichimura, with a running time of 1h 27m. It stars Yōko Matsuyama, Gorō Ibuki and Tamayo Mitsukawa.
A young female samurai comes upon a dying messenger and agrees to deliver the scroll he was carrying to its destination. However, unbeknownst to her, the scroll is actually a formula for a new kind of gunpowder. An evil clan that is planning to overthrow the Emperor is also after the scroll, and they try to take it from her.