(Japanese) Waka written by the Emperor.
It is said that the Meiji Emperor wrote over 100,000 waka and his Empress Shoken over 30,000. Mikao Usui taught over 100 gyosei, according to the Usui Reiki Ryôhô Gakkai, to support spiritual development. The Usui Reiki Ryôhô Gakkai recite gyosei at the beginning of their meetings (kenkyû kai).
Kaiji Tomita, a student of Mikao Usui, writes in his 1933 book Reiki To Jinjutsu — Tomita Ryû Teate Ryôhô (Reiki and Humanitarian Work — Tomita Ryû Hands Healing) that hatsurei hô is a meditation using gyosei.
Toshihiro Eguchi also taught gyosei in his teachings according to the author Mihashi Kazuo.