While concurrently holding the two posts, Mansai also served as To-ji choja (the chief abbot of To-ji Temple) and the head priest of Shitenno-ji Temple, and finally rose to Daisojo (head priest of the Buddhist sect) in 1409.
その間東寺長者・四天王寺別当などをも兼任し、応永16年（1409年）大僧正の位に上る。