Taking over from his father who was banished to Izu Province and then moved to a temple in Hida Province, he became a monk scholar familiar with the various arts of Onmyo referring to himself using the Buddhist name of 'Ryukan' receiving a reduction of punishment for predicting an auspicious sign on the occasion that kokushi (provincial bureaucrat) of Hida Province presented shinme (horses presented to shrines or horses used for ceremonies held at shrines in Japan) in 702 and was allowed to go to the capital city (Shoku nihongi).
伊豆国へ流罪となり飛騨国の寺に移された父から引継ぎ陰陽諸道に通じた学僧となり法名「隆観」を名乗っていたが、大宝2年の飛騨国司の神馬献上にあたり、その祥瑞を得たとの理由で罪を減免され入京を許された（続日本紀）。