Apathetic schoolboy Miharu Rokujou is content to meander through life in the sleepy village of Banten. But his quiet existence is shattered when the Grey Wolves of Iga, a powerful ninja clan, attempt to kidnap him in broad daylight. Only then does Miharu discover that the ultimate power of the hidden ninja realm - a power that can do both great good and great harm - is sealed within his body. As battles erupt among rival ninja clans seeking to control...