Afterwards, he was promoted at a fast pace as the head of the Seiga family (one of the highest court noble families in Japan at that time), served Konoefu (the Headquarters of the Inner Palace Guards) in Sanuki Province, and gained the rank of Jusanmi (Junior Third Rank) and came in lines with Kugyo in 1448.
以降清華家当主として速いスピードで昇進し、近衛府・讃岐国をへて文安5年（1448年）には従三位となり公卿に列する。