Ishido demands that Toranaga come to the capital, Osaka, to answer for his "treason." If Toranaga goes, he will be killed. If he refuses, the coalition will attack. Toranaga uses Blackthorne’s knowledge to secretly arm his own ships and plan a daring escape.
Ishido and the other three regents (backed by the Jesuits and the Portuguese) have formed a coalition to destroy Toranaga. They have declared him a rebel and are preparing to attack his lands. Toranaga is vastly outnumbered, trapped in his own castle, and running out of options.
**The Lessons of Honor and Ningen
In the final scene, Toranaga reveals his ultimate secret to Blackthorne: he understood everything from the beginning. He never needed Blackthorne’s cannons or maps—he needed Blackthorne to destabilize the Jesuits, to give him a pretext to break with them, and to make his enemies overconfident. Blackthorne was a chess piece, not a player. But Toranaga respects him. He tells Blackthorne to build a new ship, to marry a Japanese woman, and to live as a samurai.
Blackthorne, in turn, teaches Toranaga about European tactics, cannon-making, and the treachery of the Portuguese. He also gives Toranaga a crucial political weapon: the concept of a "Protestant" alternative to the Catholic powers. Shogun
Blackthorne, in turn, is initially arrogant and dismissive of Japanese culture. But he is assigned a translator and caretaker: a beautiful, intelligent, and tragic woman named . Mariko is a Christian convert (Catholic), the daughter of a disgraced samurai lord who was forced to commit seppuku (ritual suicide). She is married to a hot-headed samurai, Buntaro, but her loyalty, intelligence, and spiritual depth make her the perfect bridge between Blackthorne and Toranaga.
Blackthorne looks out at the sea—his old life—and then back at the land—his new life. He is no longer the Anjin the barbarian. He is hatamoto John Blackthorne, a servant of the Shōgun. Ishido demands that Toranaga come to the capital,
Toranaga is a master of the game of daimyōs —a chess-like political and psychological warfare. He feigns weakness, retreats, and even pretends to consider ritual suicide. He allows his enemies to believe he is defeated.