Oomoto , also known as Oomoto-kyo , is a religion founded in 1892 by Deguchi Nao (1836–1918), often categorised as a new Japanese religion originated from Shinto. The spiritual leaders of the movement have always been women within the Deguchi family; however, Deguchi Onisaburō (1871–1948) has been considered an important figure in Omoto as a seishi. Since 2001, the movement has been guided by its fifth leader, Kurenai Deguchi.

Aikido is a modern Japanese martial art that is split into many different styles, including Iwama Ryu, Iwama Shin Shin Aiki Shuren Kai, Shodokan Aikido, Yoshinkan, Renshinkai, Aikikai and Ki Aikido. Aikido is now practiced in around 140 countries. It was originally developed by Morihei Ueshiba, as a synthesis of his martial studies, philosophy and religious beliefs. Ueshiba's goal was to create an art that practitioners could use to defend themselves while also protecting their attackers from injury. Aikido is often translated as "the way of unifying (with) life energy" or as "the way of harmonious spirit". According to the founder's philosophy, the primary goal in the practice of aikido is to overcome oneself instead of cultivating violence or aggressiveness. Morihei Ueshiba used the phrase masakatsu agatsu katsuhayabi" to refer to this principle.