Although the reason of such a ruling style is unknown, it can be understood that he had been caught up in handling foreign affairs and homeland security because of the defeats in foreign wars including that of the Battle of Hakusukinoe.
その理由は分からないが、白村江での敗戦などの外戦の失敗で外交に国土防衛にいとまがなかったことが思慮される。