Actual training was conducted by Kiyoshi NAKAKURA (who was at the time Morihei's adopted son-in-law), Junichi HAGA and Gorozo NAKAJIMA: These comprised the so-called 'trio of Yushinkan,' who were the three high-caliber disciples of a close friend, Hiromichi NAKAYAMA (of the Shindo-Munen school of swordsmanship).
実際の指導は、親交のあった中山博道（神道無念流）の3人の高弟で「有信館の三羽烏」と呼ばれた中倉清（当時は盛平の婿養子）、羽賀準一、中島五郎蔵が行った。