WEBThe Jinshin War (壬申の乱, jinshin no ran) was a war of succession in Japan during the Asuka period of the Yamato state. It broke out in 672 following the death of Emperor Tenji. The name refers to the jinshin (壬申) or ninth year of the sixty-year Jikkan Jūnishi calendrical cycle, corresponding to the Western year 672. [1]