Morihei, at that time, was asked by Dai Nippon Butoku-kai to cooperate in the establishment of a comprehensive martial arts department, and in response he referred Minoru HIRAI, who was a 'general director' at the Kobukan dojo.
当時盛平は大日本武徳会から総合武術部門設立についての協力要請を受けたが、これに対し皇武館道場の「総務」であった平井稔を推薦した。