called . has changed over time; at present, two made by swordsmiths Nagamitsu and Yukihira in the Kamakura period play the role. Apart from these swords, the Imperial Family owns many swords, which are managed by the Imperial Household Agency. For example, one of the , is owned by the Imperial Family. The sword of the Crown Prince of Japan The Japanese crown prince has inherited two , or , and . While the sword is forbidden to be seen because of its divinity and is always kept in a box, the Crown Prince's sword is worn by the Crown Prince with the traditional costume at an official ceremony of the Imperial Household. The sword is the most important sword owned by the Crown Prince, given by the Emperor as proof of the official Crown Prince after the ceremony of his inauguration. Its origin is that it was given by Emperor Uda when Emperor Daigo became Crown Prince in 893, and the present, the sword is the second generation, made in the late Heian period. The sword is a made by Yukihira, a swordsmith in the Kamakura period, and the Crown Prince inherits it from the Emperor before his inauguration ceremony and wears it in various Imperial events except for the festival. This Yukihira sword is different from the Emperor's . See also Japanese sword References In Nenrin-Jahresringe: Festgabe für Hans A. Dettmer. Ed. Klaus Müller. Wiesbaden: Harrassowitz, 1992. [158]–170. Ancient swords of Japan Individual Japanese swords Mythological swords Regalia Japanese mythology