 He returned to the Ministry of Finance in 1877 as First Secretary and Director of the Customs Bureau.In November 1878, Yoshihara accompanied Matsukata Masayoshi and Aoki Shuzo to Paris in another unsuccessful attempt at revision of the unequal treaties.On February 28, 1880, he was made a director of the Yokohama Specie Bank and also held the post of Vice-Finance Minister.