Sengoku world.In order to protect their treasure, the Tokuyama family of Sunpu moved the gold nuggets to the Koka hideout of the Yada clan, and the Koka ninjas commanded and used the treasure.However, as a guarantee, Tokuyama ordered the Yada clan to release hostages, and Yukimoto Yada's mother, "Yamakuni," was sent to Tokuyama.However, Yada planned a rebellion by sending `` Hitome '', a ninja from Koga, to Tokuyama as a substitute for `` Yamakuni '' in order to defeat Tokuyama and obtain the treasure. Hitome headed for her inn where Yamakuni hid herself.However, the rogue ninja Kurihara Genzo-gumi, who obtained the information, occupied the Koga-gumi's hidden inn and waited for Hitome.