On September 23, 1011, he celebrated his coming of age by appointing FUJIWARA no Sanesue as the kakan no yaku (the role of placing a crown on the head of the boy when he becomes an adult) and became the Shihon Imperial Prince (fourth-ranked Imperial Prince) in line with the enthronement of Emperor Sanjo.
寛弘8年8月23日(旧暦)（1011年）、藤原実資の加冠によって元服して、同年9月10日(旧暦)に三条天皇の即位に合わせて四品親王となる。