Janus: Oni no Ichizoku  

The story revolves around Kiichi Samonji, who is related to the historical figure Kiichi Hougen through descent. Additionally, Kiichi is a devoted servant of Imagawa Yoshimoto, known as one of Japan's most powerful daimyo during the Toukaidou period. During the decisive confrontation between Imagawa and his adversary Nobunaga in the Battle of Okehazama, Imagawa issues Kiichi with his final command before his demise.