Kazuo's Revenge

Banished by his father, the feudal Lord, Kazuo is sent to his grandfather's ninja school in the Lightning village. Shortly after the prince's departure, a group of shadow ninjas in search of him attack his former home, the Fire village and murder the royal family. Upon hearing this news, Kazuo embarks on a journey to train in the way of the sword so that he can seek vengeance for his parents.