Imperial Regalia

The Imperial Regalia—the Sword, the Jewel, and the Mirror—are sacred emblems of imperial succession and authority. In the account of the Emperor’s expected visit to Osaka, their presence makes the moving court a moving seat of power: the divine throne travels with the Son of Heaven, and power goes with it.

The Three Sacred Treasures

The Imperial Regalia consist of the Sword, the Jewel, and the Mirror. They are treated not as ordinary possessions but as divine objects bound to the Emperor’s legitimacy. The belief described in the novel traces their descent to the god Ninigi-noh-Mikoto, who brought them to earth and passed them to his grandson, Jimmu Tenno, identified as the first human Emperor. From Jimmu, they were believed to have passed personally from one successor to the next, down to the reigning Emperor Go-Nijo.

Their separate locations and movements give the set a practical as well as sacred presence. When the Emperor stays overnight away from the palace, the Sword and Jewel travel with him in state. The Mirror remains inside the inner sanctuary of the great Shinto shrine of Ise. The three treasures thus belong to the Emperor even when they are not physically gathered in one place: together they signify his divine status and legitimate rule.

Presence and Imperial Authority

The Regalia’s political force becomes explicit when the Emperor agrees to attend the ceremony in Osaka. The Regents’ request concerns the new Council’s obeisance, with the major daimyos—including Toranaga, his family, and his vassals—expected to attend. The ceremony is set for the twenty-second day of the month, at noon, in the fifth year of the Keichō era. Because the Imperial Regalia are to be there with the Emperor, the occasion joins a political act of submission to the sacred signs of imperial authority.

The passage makes the connection spatial: wherever the Emperor stays, the divine throne moves with him, and with the throne goes power. The Regalia are therefore not simply ceremonial decoration. Their presence marks the Emperor’s person and authority as present at the gathering, lending a sacred dimension to the Regents’ political order.

The Summons and Its Consequences

The Imperial seal on the invitation makes the ceremony an obligation rather than a request that a lord may weigh at leisure. Yabu understands that no one, not even Toranaga, can refuse the Emperor’s summons. Refusal would constitute an unthinkable insult to the Divinity and open rebellion; because all land belongs to the reigning Emperor, it would bring immediate forfeiture of land and an Imperial invitation to commit seppuku, issued for the Emperor by the Regents and sealed with the Great Seal. The invitation would be absolute and would have to be obeyed.

That threat explains the sudden change in Yabu’s composure when he learns that the Emperor will come in person. The Regalia’s sacred status helps make imperial authority feel both spiritual and enforceable: the same symbols that validate succession accompany a summons backed by the power to dispossess and condemn. Their importance lies in this conjunction of belief, ceremony, and political consequence.