While successively serving as the head priest of a Buddhist service Kangakue in Toji Temple, Hoin, the highest ranked monk, and Daisojo, the highest rank in Japanese Buddhism, he was dedicated to the study of the Shingon doctrine so that he has been regarded as the restorer of the Shingon doctrine together with the monk Yukai in Mt. Koya.
東寺勧学会学頭・法印・大僧正を歴任する一方、真言教学の研究に専念し、高野山の宥快とともに真言教学の中興の祖と称される。