Yoji joined the Miburoshigumi in around June or July, 1863, as his name appeared in a 'List of Signers for Official Documents Submitted to the Shogunate' ('Bakufu Teishutsu Josho Shomeisha Ichiran' in Japanese) which was dated July 10, 1863.
文久三年五月頃（1863年6月～7月）に入隊し、同月二十五日（1863年7月10日）の「幕府提出上書署名者一覧」に名前がある。