After the death of the Emperor Jinmu (his father), Tagishimimi no mikoto (his older brother by a concubine), who had been in the political world for a long time, schemed to ascend the throne.
父の神武天皇が崩じた後、朝政の経験に長けていた庶兄の手研耳命（たぎしみみのみこと）は皇位に就こうとした。