Risshō Kōsei Kai
Mrs. Naganuma died on September 10, 1957 and was buried at Kosei Cemetery. At her funeral thousands of members came to pay their respects. In honor of her the ideogram for "Ko" in Kosei was changed to that of "ko" in Myoko. She is still highly regarded and respected by members of Risshō Kōsei Kai and her picture, along with that of Nikkyō Niwano, appears by every church altar. In 2000 Nichiko Niwano, the current leader of Risshō Kōsei Kai, granted her the posthumous title "Great Bodhisattva of Compassion".