The History and Historical Context of Usui Reiki Ryoho with Justin Stein... In this interview I sat down with Dr. Justin Stein (Justin is an instructor in Asian Studies at Kwantlen Polytechnic University.) and dove into the history and historical context of Usui Reiki Ryoho, the life and background of Mikao Usui, and some of the events that led to the establishment of Usui Reiki Ryoho.