Kaede is a kunoichi operating in Kyoto during the politically volatile Bakumatsu period. She serves a mysterious master alongside fellow kunoichi Kikyō and Ayame, executing high-risk missions like intelligence gathering, assassinations, and combat from the shadows to sway the era's outcome. The master enforces obedience through hypnotic abilities, using sexual coercion as punishment for failure, casting a constant shadow of exploitation over their duties.

Deep emotional bonds with both Kikyō and Ayame profoundly shape Kaede's experience, intertwining complexly with their missions. Romantic involvements with men they are ultimately destined to betray further tear at their loyalties and complicate decisions. This tension questions whether affection will undermine their ninja code of honor or drive them toward escape and defiance.

A secret command forces Kaede and the others into a life-threatening mission. This directive heightens the existing conflict between duty, personal bonds, and survival, pushing their passions and resolve to the breaking point. Her ongoing story navigates these mission dangers, the master's control, and the emotional burden of her relationships within the collapsing social order.