Reiyūkai (霊友会 Spiritual-Friendship-Association) is an organization founded in 1920 by Kakutarō Kubo and Kimi Kotani. It is a lay organization—meaning that there are no priests—associated with Nichiren Buddhism. Reiyūkai considers itself the grandfather of lay-based new religions devoted to the Lotus Sutra and ancestor veneration. A further offshoot from Reiyūkai, in 1938, is Risshō Kōsei Kai.