He became the 253rd Tendai-zashu in 1974, after serving as the head of the academic department of the Tendai sect, the director of educational institution of Tendai sect and the head priest of Shiga-in, honbo (priests' main residence) of Enryaku-ji Temple.
天台宗教学部長、天台宗勧学院院長、延暦寺本坊滋賀院門跡をへて、昭和49年（1974年）、第253世天台座主に就任。