After Emperor Jinmu, the father of Emperor Suizei died, Tagishimimi-no-mikoto who was an elder brother of his father's mistress and who had more experience and was proficient in the politics in Imperial Court politics tried to kill his younger half brothers.
父・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）が、腹違いの弟たちを害そうとした。