was a member of the royal family in
Japan during the
Asuka Period. He was the eldest son of
Emperor Tenmu. He fought on the side of his father in the
Jinshin War (672), a battle of succession, which resulted in his father becoming
Emperor. At the age of 19, he was dispatched by his father to the battle front in what is now
Fuwa District,
Mino Province (now the southern part of
Gifu Prefecture) as vanguard and general commander. In 679, while in
Yoshino with his father, he swore to an oath of cooperation with his siblings. When
Empress Jito ascended to the throne in 686 he became the
Daijo Daijin and handled government affairs. He died suddenly in 696, thought by some to be an assassination.