What is the Mystic Principle of Responsive Communion?

The Mystic Principle of Responsive Communion is embraced by the Soka Gakkai*, the "orthodox" Nichiren sects, Tientai, and Nichiren Daishonin. In the SGI, it refers to the believers' relationship with Daisaku Ikeda and for Tientai, the "orthodox" sects, and Nichiren Daishonin, it refers to the believers' relationship with Shakyamuni Buddha.

*See article by SGI study chief Dr Mikio Matsuoka published in The Journal of Oriental Studies, Vol 15, 2005 http://www.sgi.org/resource-center/study-materials/the-buddhist-concept-of-the-human-being-from-the-viewpoint-of-the-philosophy-of-the-soka-gakkai.html