The rituals of inheritance had been operated in order to announce eligibility and ability of the successor toward servants and people. There were three rhetoric which had been adopted in the former half of 8th century when the Ritu-ryo system was established in Japan for proving the successor’s qualifications, the myth which indicated (s)he was an offspring of the divine who originated everything, the protocol the emperor Tenji created named “Fukaijyoten” and the predecessor’s will. In the latter half of 8th century, the last one became the most significant. Additionally, new ritual named “Senso” that the predecessor handed three gallerias which symbolized the kingship to the successor at the palace Daigokuden appeared in 781 when the prince Yamabe succeed to the throne and became the emperor Kanmu. It has generally been said that Yamabe’s father the emperor Konin attempted to appeal new dynasty started from then initiating new ritual. On the other hand, traditional rhetoric, the predecessor’s will which was indicated in his statement Senmyo also was essential for them. This paper evaluates this coexistence might indicate nature of Japanese ancient kingship. The emperor Konin’s offspring could not ignore continuity, relationship with ancestors when they aimed at revealing their newness.(Chungnam National University)