Imperial Prince Takahito was the Crown Prince for twenty three years; however, since the sword Tsubokiri was retained in the Imperial Palace by Yorimichi during that time, Imperial Prince Takahito acceded to the throne without having a symbol as the Crown Prince.
尊仁親王が東宮であった期間は23年間であったが、この間壺切は頼通が内裏に留め置いたため、東宮としてのシンボルを持たずに即位した天皇となる。