Uta NAGAI submitted an opinion brief called 'Kokai Enryaku Saku' (advocating trading with foreigners, rather than expelling them, by cooperation between the imperial court and shogunate), which led the clan to support reconciliation between the imperial court and shogunate.
長井雅楽の「航海遠略策」によって藩論が公武合体論に傾いた。