In 1982 Shinsō Itō (born 1942 as Masako Itō), the third daughter of Shinjō and Tomoji, completed her Buddhist training. Shinjō announced her to become his successor in 1983 and gave her the priestly name 'Shinsō'. After Shinjō's passing on July 19, 1989 Shinsō Itō becomes the head of Shinnyo-en. In 1992, Shinsō Itō was conferred Daisōjo, the highest priestly rank in traditional Shingon Buddhism, by the Daigo-ji Shingon Buddhist monastery. She also received an honorary doctorate from Mahachulalongkornrajavidyalaya University in Thailand in 2002 for her long-standing efforts to foster relations with Theravada Buddhism.