The Taikō's Ten Years of Peace

The Taikō's Ten Years of Peace is the first empire-wide interval without war in Japan’s remembered history, an extraordinary quiet made possible by the Taikō’s conquest and authority. Its end reveals how much that quiet depended on one ruler: after his death, a child inherits the claim to power while rival lords maneuver around him, and the empire turns again toward war.

The Peace and Its Maker

The peace is remembered not as a natural condition but as an achievement imposed across the realm. The Taikō had subdued the land, compelled the Daimyo to submit, and rearranged their fiefs, promoting some and deposing others. His order was formidable enough to make the absence of war feel almost unbelievable; it had lasted ten years, and for Mura, who had begun to appreciate peace, its loss was not an abstraction but the threatened return of fighting among provinces and villages.

The settlement’s force and its fragility belong together. The Taikō dies a year before the crisis described, leaving a seven-year-old son too young to inherit supreme power. The boy, like those caught between the great lords, is politically exposed. Even the ruler who made the peace can no longer protect his son, dynasty, inheritance, or empire. The interval ends, therefore, not because its memory has faded but because the authority that maintained it is gone.

Succession Without Security

The Taikō’s death transfers government to a Council of Regents charged with ruling during the heir’s minority. Though five eminent lords hold the office, the struggle is concentrated between Toranaga and Ishido, the two men with real power. The Council’s existence preserves the form of collective rule, but it cannot remove the rivalry on which the empire’s immediate future depends.

The rules intended to contain that rivalry are already under strain. The Taikō’s covenants forbade Regents from taking one another’s family members as hostages, yet Ishido points out that Ochiba, the Heir’s mother, is in Toranaga’s castle at Yedo while Toranaga is in Osaka. Toranaga presents her visit as a family occasion: she has gone to see her sister, Genjiko, whose husband is Toranaga’s son Sudara. Behind that explanation lies a deliberate marriage arrangement. The Taikō had once proposed that Toranaga marry Genjiko; Toranaga instead maneuvered for her to marry Sudara, keeping her within his household’s control and making the bond a counterweight to Ochiba’s influence. Kinship offers protection and leverage at once, while the hostage dispute shows how readily the regency’s written safeguards can be bent by political necessity.

The Quiet’s Armed Undercurrent

Peace does not mean that the military order has stopped changing. The Portuguese introduced muskets and gunpowder, and Japan began manufacturing them within eighteen months, but firearms long remained novelties. Conventional warfare prized individual, hand-to-hand combat; the sword carried greater honor, and the use of guns was considered cowardly and contrary to Bushido. Yabu, however, has privately contemplated a different future for years. After the ship reveals its cargo, he counts five hundred muskets, twenty cannon, and thousands of cannon balls, and orders the weapons moved secretly to his castle at Mishima.

Yabu’s proposed force would combine five hundred selected Samurai, drilled to fight together with muskets, with twelve thousand conventional troops and specially trained cannon crews. The change is not merely a matter of acquiring weapons: it requires replacing individual combat with coordinated formations and repeated volleys. A later demonstration makes that difference visible. Five disciplined phalanxes advance in four ranks; the front rank fires and kneels to reload while those behind fire over it. When a staged charge drives the formation into retreat, the musketeers regroup in a V and resume their volleys. The demonstration uses blank ammunition and acting, but its imagined result is stark: the opposing force would have been slaughtered. The old code and the new tactic remain in open tension, even as the decade of peace gives way to preparations for war.

From Reprieve to Renewed War

Toranaga’s Crimson Sky plan makes the break with peace explicit. He describes a sudden assault on Kyoto with eighty to one hundred thousand men, intended to seize the capital, free the Emperor from the forces surrounding him, and seek a new imperial mandate for a Council that would put the realm and the Heir ahead of private ambition. The plan would leave Toranaga’s own lands exposed and his retreat unsecured; its success depends on mobility, surprise, and hidden preparations already planted in castles and provinces.

The remembered peace thus measures both the scale of the impending disaster and the limits of the order that preceded it. Mura imagines alliances breaking apart, provinces fighting provinces, and villages returning to the conflict that peace had interrupted. The Taikō’s decade has shown that warlessness was possible, but its sudden dependence on a dead ruler and a minor heir makes it impossible to treat as permanent. Its legacy is a contrast: a unified empire remembered by those about to be divided, and a hard-won quiet that gives the coming war its full weight.