In May 1873, a written opinion was submitted to the Cabinet concerning the issue to conclude a Japanese-Korea Treaty of Amity with the Yi Dynasty Korea; this was the beginning of Seikanron (debate on subjugation of Korea) and caused the Coups of 1873
1873年（明治6年）5月、内閣に提議した李氏朝鮮との日朝修好条規締結問題における意見書は、征韓論の端緒となり、明治六年政変を引き起こすこととなる。