He accepted conversion of Emperor Seiwa and FUJIWARA no Yoshifusa to Buddhism and in 864 was appointed as Sojo (high-ranking Buddhist priest) and was called Jogan-ji Sojo.
清和天皇・藤原良房の帰依を受け864年（貞観6年）には僧正に任じられて貞観寺僧正と称された。