Later, the background is unknown, but he went to Kyoto, and on Febuary 1247, he is thought to have secretly celebrated his attainment of manhood at the discretion of TAIRA no Tsunetaka ("Yokoki").
その後経緯不詳ながら上洛し、宝治元年（1247年）2月に平経高の計らいにより密かに元服したとされる（『葉黄記』）。