OVA | Cage of Flames
Misao seeks out Kenshin, an excellent swordsman who has sworn an oath not to kill. Together the two learn of Makoto Shishio's villainous plan.
Although she's only sixteen and looks even younger, Misao Makimachi is already a skilled and competent member of the Oniwabansh ninja clan. Which is a fortunate thing when she stumbles upon a plot to overthrow the Meiji government!