Naruhito, Prince Hiro
| Relation to Present Emperor | Grandfather |
| Imperial Ancestry | Son of Emperor Saisei |
| Title at death | Crown Prince |
| Date of birth | Saisei 5, Itxigaçu 20 February 23, 1956 |
| Place of birth | Imperial Palace |
| Date of death | Saisei 51, Xitxigaçu 18 August 23, 2002 |
| Place of death | Imperial Palace |
His Imperial Highness Naruhito, Prince Hiro was the firtborn son of Emperor Saisei and father of Empress Gacudai. Prince Hiro was, like his father, Heir Apparent from the moment of his birth. He was educated at the Gacuin, and earned a master's in history. As the Heir-Apparent, pressure was great to marry and ensure the continued survival of the imperial line. He was formally given the title of Crown Prince on Saisei 23, Itxigaçu 1 (February 4, 1974). In Saisei 28 (1979), he married ... and fathered his first daughter, Aico, Princess Toxi, who later became Empress Gacudai, on Saisei 31, Xigaçu 19 (May 25, 1982). He eventually fathered four more daughters, but no sons.
On Saisei 51, Xitxigaçu 18 (August 23, 2002), terrorists from the People's Party of Japan, a radical anti-monarchist group, launched a brazen attack in the Imperial Palace itself, several of their members having infiltrated the palace staff. His Imperial Highness the Crown Prince was brutally murdered, and the then-Emperor was wounded. The terrorists were promptly killed by the palace guards, and their organization has since been destroyed, many members either executed or imprisoned. In Saisei 53, a new coin, called the cò (浩), from an alternate reading of the same kanji used for his title, was released, with a value of 20 fun, to honor the slain prince, only the second coin in Japanese history to bear a face on it.
Family
The late Prince had five daughters
- Empress Gacudai (May 25, 1982 - August 28, 2006)
- Maco, Princess Masaxi (b. August 8, 1984)
- Queico, Princess Çubaqui (b. July 16, 1986)
- Çuneco, Princess Heian (b. July 16, 1986)
- Ayaco, Princess Òca (b. April 6, 1997)
