Crimson Sky

Crimson Sky is Toranaga’s contingency for a sudden assault on Kyoto, intended to seize the capital and the Emperor from the forces aligned with Ishido. More than a battle order, it is a carefully guarded scheme whose timing and even apparent activation can be manipulated: Toranaga repeatedly considers launching it, announces versions of it, and later reveals that one such announcement was a feint. Its changing status exposes the central tension in his strategy between decisive violence and the patience needed to make victory possible.

The Code and the Original Plan

Crimson Sky begins as the war signal embedded in Plan Five, a message system known to only four people: Toranaga, his eldest son Noboru, his second son and heir Sudara, and Kiri. Toranaga anticipates that at least four couriers may be lost to arrows, spies, or hawks, but believes the message can survive the risk because, unless Ishido has broken the code, its meaning will remain hidden from him. The instruction is to disregard all other messages and activate Plan Five. Its secrecy is therefore not incidental: the plan is designed to function despite interception and in a political environment where information itself can be a weapon.

Once activated, Plan Five calls for Yoshi clan leaders and their most trusted counselors to gather immediately at Yedo and mobilize for war. Crimson Sky is the code word that turns this preparation into action. In its original form, Toranaga’s assassination or capture makes the offensive inexorable: Sudara is to lead the legions in an immediate, fanatical assault on Kyoto, aiming to take the city and the Emperor. Secret uprisings prepared over years in fifty provinces are intended to accompany the attack. The plan’s targets—passes, cities, castles, and bridges—have already been selected, so its apparent suddenness would rest on long preparation rather than improvisation.

That design has a grave weakness: it depends on leadership that Sudara does not yet possess. Toranaga judges that his son has courage and intelligence but lacks the experience to bring undecided daimyos with him. Osaka Castle and the Taikō’s heir, Yaemon, also stand in the way, serving as a rallying point for the jealousy and hostility Toranaga has accumulated over decades of war. In Toranaga’s assessment, he may be the only leader capable of making Crimson Sky succeed; even the Taikō could have carried it through. The contingency is thus both a means of preserving Toranaga’s power and a danger to the succession it is meant to protect.

A Military Gamble, Not a Preferred Opening

When Toranaga later explains the plan to his officers, he describes a violent rush on Kyoto with eighty to one hundred thousand men. The aim is to take the capital from Ishido’s forces, free the Emperor from those who have deceived him, and ask the Emperor to revoke the current Council of Regents’ mandate and appoint a new council that puts the realm and Yaemon ahead of personal ambition. The language of restoring legitimate authority accompanies a military gamble: Toranaga would leave his own lands unprotected, his flanks exposed, and his retreat unsecured.

The route is dangerous. Yabu points out that Ikawa Jikkyu controls the Tokaido for a hundred ri and that Ishido has further strongholds beyond it. He argues that the Musket Regiment might blast a way through the mountains and urges Toranaga to risk a concentrated attack, treating the attempt itself as worthy of samurai even if it ends in failure. Naga, by contrast, accepts the need to act but recommends using two months to gather allies and isolate Ishido before attacking without warning after the rains. Their competing advice makes the plan’s defining problem concrete: concentration and surprise may offer a path through enemy defenses, but committing everything too soon could leave Toranaga with no protection if the attack fails.

At one point Toranaga looks at crimson clouds and thinks that the planning may be futile; he may have to declare Crimson Sky himself and lead the legions toward Kyoto. He imagines one hundred thousand against a force ten times larger. Even as he contemplates that scale, he recognizes a practical cost: Toda Mariko cannot be detached as interpreter indefinitely. The image of the clouds and the operational name converge on an impending decision, but the thought is not a settled order. Across the story, Crimson Sky remains a possibility to be measured against political timing, command, and the danger of fighting an enemy whose strength is not yet sufficiently divided.

Announcement, Counterplan, and Feint

The debate turns on whether Toranaga’s public declaration can be trusted. Mariko advises him to bring Lord Zataki secretly back to his side, suggesting that Zataki’s apparent defection may itself have been arranged to mislead Ishido. She reasons that Toranaga has always counseled patience and attacks only when certain of victory; for that reason, publicly ordering Crimson Sky at once could be another diversion. If spies report the threat, Ishido may have to scatter his forces in bad weather to meet an attack that never comes. Mariko’s reading makes the plan a form of strategic communication: the threat can change enemy deployments even while Toranaga withholds the decision to execute it.

Toranaga nevertheless announces Crimson Sky to his assembled officers. One hundred and fifty officers stand in rows, with Yabu, Omi, and Buntaro in front and Mariko beside Blackthorne. He presents the essence of the dispatch and, for the first time in public, his ultimate battle plan. But he withholds two crucial details: the prepared provincial insurrections and the fact that the attack would take the northern rather than the southern coastal road. He tells the officers that the code words will launch the attack when the rains cease. Their acclaim reflects relief that uncertainty has ended, while the omissions show that even a public disclosure is only partial.

His operational orders make that announced version tangible. The Attack Regiment is to be ready within five days to board galleys for Yedo, under Buntaro’s command with Kasigi Omi as second-in-command. Yabu is ordered to mobilize Izu and send six thousand men to the frontier passes in case Jikkyu moves south and cuts Toranaga’s communications. The officers agree not to reveal the decision made that afternoon to attack during the rainy season. The public timetable and the concealed immediate decision do not match; the contradiction is part of the plan’s usefulness, since different listeners can carry different versions of Toranaga’s intentions.

Toranaga later makes the deception explicit. He tells an interlocutor that he had ordered Crimson Sky as a feint to confuse Ishido and had allowed selected parts of the discussion to reach the wrong ears. He had not thereby solved the military problem: Ishido’s force remained, in Toranaga’s judgment, invincible. At another point he states that he is going to Osaka and that there will be no Crimson Sky. The apparent reversal feeds uncertainty among those around him, some of whom hope that a change of plan means the attack is about to begin. Toranaga’s own explanation is that Crimson Sky was always a last plan, not an automatic response to pressure.

Delay, Resistance, and Changing Stakes

The plan’s uncertainty has severe personal and political consequences. Buntaro believes Toranaga is surrendering the real fight and assumes that he will share his lord’s death, together with every generation of his family. He imagines that, when his duty is complete and Toranaga has gone into the Void, he will have to kill Mariko and their son before taking his own life. In his despair, Crimson Sky becomes the lost possibility of honorable battle; its disappearance leaves only a future of anticipated family destruction. Naga reacts differently but with equal intensity. He imagines there will be no glorious defense in the Shinano mountains or on the Kyoto plains, no final charge with the guns, and no heroic death beneath his father’s standard—only a hurried seppuku and the end of the Yoshi line. These responses reveal how a strategic decision is interpreted by warriors whose sense of duty is bound to the prospect of fighting and dying for their lord.

Hiro-matsu refuses to accept Toranaga’s apparent surrender. In a private resolve to disobey him, he plans to enlist Sudara and Lady Genjiko and order Crimson Sky when the rains cease, intending to keep Toranaga safe in Yedo Castle even against Toranaga’s wishes. His decision shows how the plan can become a cause of conflict within Toranaga’s own command: loyalty to the lord, as Hiro-matsu understands it, means overriding the lord’s stated decision in order to preserve him and continue the war. Alvito, meanwhile, finds Toranaga’s decision to submit so contrary to expectation that he had dismissed it as impossible. His earlier forecast had been that Toranaga would wait, seek to bring Zataki back, and fight once circumstances forced a choice. Crimson Sky therefore shapes the predictions of both Japanese commanders and foreign observers, even when neither can be certain whether it is real, delayed, or abandoned.

Toranaga’s later account sets out a more patient battle plan. The Christian daimyos Onoshi and Kiyama remain against him, and he expects the Christians to oppose him apart from his own Christian retainer. Rather than strike Kyoto immediately, he needs time to use his allies and secret friends across the Empire; each day of delay, he argues, weakens Ishido. After the rains, he expects a pincer against Kwanto: Jikkyu advancing from the south and Zataki from the north. Toranaga plans to contain Jikkyu at Mishima, fall back toward the Hakoné Pass and Odawara for a final stand, and hold Zataki in the northern mountains near Mikawa. He expects to fight, delay, and wait behind the mountains until the opportunity is ripe for Crimson Sky. In this version, postponement is not inaction but the means of improving the conditions under which the final offensive might succeed.

The calculation depends on more than land armies. Yabu imagines a later plan in which Blackthorne, his ship, its cannon, and a new crew could help distract Christian leaders and draw temporary support away from Ishido, while Zataki’s return and Yabu’s Musket Regiment support a movement through the Shinano passes toward Kyoto. Yabu places that possibility in the following year and recognizes that Toranaga might then become president of the Regents; he also fears that once Toranaga has power he will be ordered to commit seppuku. His political hopes and fear of betrayal are entwined with the projected offensive. Separately, when Yabu reckons that Toranaga has only nineteen days before he must reach Osaka, he realizes there is not enough time to reach Nagasaki, seize the Black Ship, and use it to pressure the Christian daimyos. Without that leverage, he doubts there is time to launch Crimson Sky. The arithmetic of days, ships, and political alliances can make the grand plan seem, once again, like an illusion.

The Last Plan and Its Meaning

Even when circumstances finally demand movement, Toranaga does not treat the name as a synonym for every attack. After receiving advance warning of Jikkyu’s plot and learning of the enemy’s death, he orders the Eleventh, Sixteenth, Ninety-fourth, and Ninety-fifth Regiments at Mishima placed on immediate alert and sent down the Tokaido in four days. Sudara asks whether this is Crimson Sky. Toranaga answers that ten thousand men should be enough if they have surprise, while emphasizing that he must still guard the borders against failure or a trap and contain Zataki. Hiro-matsu’s assault force is given twenty days to cross the Tenryu River and secure the Tokaido Road. These are consequential offensive preparations, but the limits Toranaga sets distinguish them from the original all-legions rush on Kyoto.

The final insistence that Crimson Sky has always been a last plan gathers the expression’s contradictions into one strategic principle. It names an extreme offensive built around surprise, mobility, and the seizure of the capital, yet its very extremity makes immediate use dangerous. Toranaga can deploy its name to frighten Ishido, rally his officers, or conceal another course; he can also hold it in reserve while the balance of alliances changes. The plan promises decisive action, but its recurring deferral is itself action: time, secrecy, and controlled uncertainty are the conditions Toranaga tries to create before committing his forces to the gamble.