He studied Kenmitsu Buddhism (Exoteric Buddhism and Esoteric Buddhism), kai (precept) and siddham (Sanskrit) initially under Dengyo Daishi Ennin and after his death, under Hensho.
初め伝教大師円仁につき、円仁の死後は遍照に師事して顕密二教（顕教と密教）のほか戒・悉曇（しったん）を学んだ。