ɐ ɹˌɛpɹᵻzˈɛntətˌɪv ʌv ʃˈoʊə hˈɪstɚɹi ɹᵻsˈɜːtʃ ˈɪnstɪtˌuːt, hiː fɹˈiːkwəntli dʒˈɔɪnd kˈɑːntɹəvˌɜːsiz sɚɹˈaʊndɪŋ dʒəpˈænz wˈɔːɹtaɪm pˈæst, pɚtˈɪkjʊlɚli ðə dᵻnˈaɪəlˌɪzəm ɔːɹ mˌɪnɪmᵻzˈeɪʃən ʌvðə nˈæŋkɪŋ mˈæsəkɚɹ ʌv nˈaɪntiːnhˈʌndɹɪd θˈɜːɾi sˈɛvən θˈɜːɾi ˈeɪt.
A representative of Showa History Research Institute, he frequently joined controversies surrounding Japan's wartime past, particularly the denialism or minimization of the Nanking Massacre of 1937–38.