In 1858, he was appointed as Daikansatsu (senior inspector) with Yoshida's return to the politics of the Tosa Domain and formed a group of young reformists named 'Shin Okozegumi' to reform the politics of the domain.
1858年、吉田の藩政復帰に伴なって大監察に登用され、後藤らと若手革新グループ「新おこぜ組」を結成して藩政改革に取り組む。