Afterward, he assumed posts such as Ikai (rank in law and ordinance system), hyobu kyo (chief of the department of the army) or the governor of Kazusa Province, and he moved into Ninna-ji Temple renamed as Shinjaku when SUGAWARA no Michizane, his father in law was relegated to Kyushu Dazaifu in 901.
その後位階・兵部卿・上総国太守などを歴任したが、延喜元年（901年）菅原道真が九州太宰府に左遷されると、道真の娘を妻としていた斎世親王は仁和寺に入って真寂と名乗った。