60 years ago, the Fujiwara clan has been treated like slaves because of a war that happened and they were powerless because their power was stolen. But Akio and Shoyo's grandfather managed to get their stolen clan power, Yamikiri, back into their hands to restore their pride and honor. Unfortunately, the Tokugawa Clan was envious of this power and killed every Fujiwara in the village, but luckily Shoyo, Akio, and their grandmother, Rina, managed to escape the massacre. While Akio and Shoyo were training, Akio awakened his technique and found out that he's the next fujiwara to possess the power of the Yamikiri. Now that the power of their clan has awakened once again, who knows what challenges he might encounter.