In the early February 1869, OSHIMA (he had been assigned to the senior officer of Tsushima Domain due to the office organization reform) was dispatched to Choryang-dong Wakan (consular office in Korea) to inspect the situation of Korea.
明治2年（1869年）2月上旬、対馬藩職制改革により参政に転じていた大島は、朝鮮事情視察のため倭館草梁倭館に派遣された。