I read that he was interested in the ancient history of Japanese and he wrote a book when he saw what was happening and judged it as very objectivity, unlike other Japanese right-wing scholars. Although he wrote a third edition of the one-way text, the one thing that was difficult to understand is that even if he had been objective, he would have kept closely watch over what seemed to be the beginning of our ancient nation known to right-wing scholars. It was a pity that the ancient history