Fukai-no-Joten/ Fukaijoten is elaborated with the purpose of denying the conventional form of succession practiced until the former dynasty through consultations and recommendations by a group of vassals, and establishing the right to the appointment of the successor within the emperor's authority, and consequently it tried to cut out the struggles related to imperial succession.
不改常典は、前代まで一般的だった群臣の協議と推戴という形式を否定し、後継者指名を天皇大権の一部とし、皇位継承抗争を絶とうとしたものである。