In 1351, after the leader of the Northern Court, Takauji ASHIKAGA, submitted to the Southern Court, unification of the Imperial line took place in the Shohei era during the Kanno Disturbance, and the Imperial lineage was given to the Southern Court temporarily.
1351年、北朝を擁する足利尊氏が南朝に帰順し、皇統が一時的に南朝へ統一される観応の擾乱正平一統が成立する。