The battle for succession that continued for three generations of shogun in the Keichou era culminated in a gruesome battle of ninja arts between the Kouga and Iga clans. Amidst a rain of flower petals, a man and woman who had decided to live for love were separated once again. As ninjas begin to disappear into the shadows after being deemed unnecessary, The Kouga and Iga clans ask a favor of Hachirou and Hibiki in hopes of reinforcing their foundations.