The Emperor Tenchi (Tenji) plotted a rebellion with NAKATOMI no Kamatari and seized power in a coup to kill SOGA no Iruka, by which his uncle Emperor Kotoku came to power and he became a prince.
中臣鎌足らと謀り、クーデターを起こして蘇我入鹿を殺害し、叔父・孝徳天皇を即位させ、自身は皇太子となった。