Blowing like a wind and a cloud, a blue-eyed female ninja with a painful destiny has arrived! A blue-eyed ninja, Hijiri, is a fierce and cold-blooded assassin. She encounters a thief after the scroll of esoteric immortality from the treasure house of a Christian daimyo, Rokusha, and she gets into a sword fight with him. In the close battle, she is wounded, but is rescued by a Christian named Seitaro, and they begin falling for each other. But her happy days don’t last. Openly critical of Christianity, “a bad foreign religion”, the Dainichi Shinkyo weaves dark intrigues to kill Hijiri and Christians.

During Japan's feudal era, Mitsuhide Akechi worked to foil Nobunaga Oda's ambition for the unification of the entire country. To this end, Akechi had his eyes set on many of Oda's vassals, including leyasu Tokugawa. To protect Tokugawa's life, the kunoichi Kaede is sent to keep an eye on him as he travels through the mountains of Igo. Hiding in plain sight as a boxwood inn, she discovers that a skilled killer and his crew are already gathering in the area. Will a single lady ninja be able to complete her mission in the face of so many armed and dangerous men?