He became a preceptor in the year 810 and betto of Kofuku-ji Temple in 812, following which he constructed Denpo-in Temple within the precinct of Kofuku-ji Temple where he began conducting Shinmitsue.
810年（弘仁元年）に律師、812年（弘仁3年）に興福寺別当となり、興福寺に伝法院を設けて深密会を始めた。