In 796, at Iwabuchi-dera Temple located at the foot of Mt. Takamado, he started Hokke hakko (ceremonial series of eight lectures on the eight scrolls of the Lotus Sutra) for the repose of the soul of Eiko, who had been in the same school.
796年（延暦15年）同門であった栄好の追善のために高円山（たかまどやま）の麓の岩淵寺で法華八講を創始した。