Also, although the original manuscript for Ribuoki (also pronounced Rihioki), the diary of Imperial Prince Shigeakira, has not survived and no copies are presently known to exist, extracts from it that appear in later diaries and documents suggest that it included detailed reports on conferences held at the Imperial Court, providing a valuable historical record of the ceremonies and rituals practiced at the Imperial Court at that time.
なお親王の日記『吏部王記』は原本も写本も現存しないが、後世の日記や書物に引用された逸文から見て、朝議に関する詳細な記録を書き留めたものであったらしく、当時の朝廷の儀式・典礼に関する貴重な史料である。