Following the retirement of Daewongun (a title of biological father of King in Yi Dynasty Korea, who is not previous king) in December, 1873, who had advocated seclusion policy, and the death by execution of Kundo Dong-Jun AHN in April, 1874, Moriyama was sent to Korea again in May, 1874 and discussed with Kundo Seog-un HYEON about establishing new relationship between Japan and Korea.
明治6年（1873年）12月の朝鮮国で排外論を唱える大院君の引退、明治7年（1874年）4月の訓導・安東晙の刑死を受けて、同年5月に再び朝鮮国へ派遣され、訓導玄昔運などと日朝新関係成立について協議した。