In the Crown Prince postmortem problem of Emperor Shotoku (Emperor Koken), he was in rivalry with KIBI no Makibi who supported FUNYA no Kiyomi from Emperor Tenmu 's series and later his younger brother FUNYA no Ochi.
称徳天皇（孝謙）死後の皇嗣問題では、天武天皇系の文室浄三のちにその弟文室大市を推した吉備真備に対抗した。