豐後國
Minoura was from Usuki, Bungo Province (present-day Oita Prefecture. He attended the Kieo Gijuku, (the predecessor to Keio University, where he was a disciple of Fukuzawa Yukichi. After graduation, he joined the Yubin Hochi Shimbun in 1875 as a reporter, and rose rapidly ranks to become president of the company in 1890. He was once jailed for an editorial supporting greater public rights.