In addition, since there are many grammar mistakes in the descriptions about the age before and after the Taika Reform (there are entirely no grammar mistakes in other ages), it has been pointed out that there is a chance that the Chronicles of Japan was altered.
また、大化の改新前後の記述は文法ミスが多いことから（他の個所では文法ミスは一切存在しない）改竄の可能性が指摘されている。