Shobo studied the doctrine of Shingon Esoteric Buddhism (Shingon Sect), traveling to Nanto (southern capital (Nara)) to study the doctrine of Mahayana Buddhism (Sanron Sect, Hosso Sect and Kegon Sect).
真言密教（真言宗）の教学を学び、南都に遊学して大乗教学（三論宗・法相宗・華厳宗）を修めた。