The entry in the "Azuma kagami" for the 24th day of the third month of Genryaku 2, which concerns the battle of Dannoura, states that 'Tokiko held the treasured Sword, and Lady Azechi reverently held Emperor Antoku close, and then they jumped together and sank away to the bottom of the sea.'
『吾妻鏡』の壇ノ浦の戦いの元暦二年三月二十四日の条で「二位ノ尼は宝剣を持って、按察の局は先帝（安徳天皇）を抱き奉って、共に海底に没する。