The ninja attack on Osaka Castle is a covert assault on the Browns’ stronghold that becomes a battle over Toda Mariko and exposes Yabu’s secret cooperation with the attackers. Its methodical infiltration gives way to a confused defense, while a concealed route through the fortress makes the raid possible from within as well as from outside.

Infiltration and Yabu’s Complicity

The attack began two or three hours before dawn, in the darkest part of the night. Ten ninja, known as the Stealthy Ones, crossed from an unguarded roof opposite the battlements, throwing cloth-covered grappling hooks across the gap and swinging over like spiders. Dressed in black from their close-fitting clothes and tabi to their masks, with hands and faces blackened, they carried chain knives, shuriken, haversacks, and short poles. Their weapons were suited to sudden, close violence: the shuriken included poison-tipped barbs and palm-sized discs. The attackers reached the roof without a sound; four then hooked their ropes to a projection and descended twenty feet to a veranda as the others gathered the grapples and moved across the tiles. The raid depended on stealth and divided movement, not a direct assault on the castle’s defenses.

The breach also depended on Yabu, whose part in the attack was concealed behind the ordinary routines of the stronghold. Earlier, after returning from Ishido’s office with a safe-conduct pass, Yabu had been privately approached by a samurai he did not know and invited to cooperate. When Sumiyori, the captain on watch, sensed that something was wrong and went to inspect the darkness, Yabu feigned concern and listened beside him. He then stabbed Sumiyori in the back, covering his mouth to suppress a cry. Yabu held the dying man away from himself to keep blood off his clothes, arranged the body on the futons as if he were sleeping, and cleaned his sword. Sumiyori’s suspicion had forced Yabu into an unplanned killing, but Yabu considered the captain’s continued patrol too dangerous to allow.

Yabu next led a single guard down through the fortress, past the main foyer and into the servants’ quarters. The servants hurriedly put their heads to the flagstones as he passed; he paid them little attention and continued through seldom-used, damp cellar corridors toward the outer walls. There he killed a Brown samurai who had stopped to listen, dragged the body into a dark corner, and searched for a small iron door hidden in the wall. Ishido’s intermediary had told him where to find it. Yabu fought the rusted bolts until the last clanged free, but the opening brought a spear to his throat. Ninja waited in the darkness outside, weapons poised. Yabu made the sign he had been taught and identified himself; their masked leader cautiously entered the corridor, inspected the dead Brown, and retrieved his chained spear. The hidden door had turned Yabu’s private betrayal into an opening inside the stronghold.

The Assault and the Attempt to Seize Mariko

The alarm transformed the infiltration into a running fight through the castle. On the top floor, ninja burst from their hiding places and attacked the Browns hurrying downstairs, using poison darts and shuriken to overwhelm them. When Brown reinforcements charged, the attackers whirled weighted chains to strangle samurai or entangle their swords, then struck with double-edged knives. Some ninja were cut down, but continued crawling forward until they died. In the garden, defenders initially drove the raiders back by force of numbers; the Browns pursued, only to be drawn into an ambush and slaughtered. The attack’s stealth had become open combat, but the invaders still used feints, concealed positions, and the castle’s passages to control where its defenders could respond.

The red-spot raiders had a different immediate objective. Their leader watched the fortified corridor from a spyhole as Browns and Blackthorne’s Grays left the audience room to take up defensive positions farther away. A woman hurried to the inner-corridor threshold with Blackthorne beside her, and the leader recognized Mariko as his intended prey. Eager to relieve the fighting below, he signaled his men to attack before the opening was secure. Blackthorne drew his pistol and shot him; the Gray captain’s counterattack briefly held the remaining ninja back, giving Blackthorne time to pull Mariko inside and bar the door. The attack on the corridor thus turned on a few seconds: the premature rush cost the raiders their leader and bought the people inside temporary protection.

That pause became a desperate effort to escape through a side door onto the battlements. Blackthorne struggled with its rusted bolts while Mariko pretended to be unable to open them, pleading with the ninja outside to delay them. The red-spot leader’s orders were to take Mariko alive and unarmed and deliver her to Grays waiting at the end of a tunnel from the cellars. He had also brought small kegs of powder and laid a trail to blow open the secret entrance, but the woman on the other side of the door might be killed by the blast. As the battle closed in, he chose to ignite the powder and warned those inside to get away.

Blackthorne finally forced the side door open, and the women began filing onto the veranda. Mariko instead remained by the iron door and declared that she protested the attack and would do so by her death. The explosion tore the door from its hinges and threw Blackthorne aside. The blast knocked Kiri and the others down outside, though they were mostly unhurt; inside, smoke filled the room as the ninja pressed in. Mariko was already broken and dying. Blackthorne lay stunned, bleeding from his ears and nose, with his pistol bent and useless in a corner. The escape attempt had ended not with a clean rescue but with the destruction of the barrier and the loss of the person the raiders had been ordered to capture.

Death, Retreat, and Public Witness

The explosion left the raid’s intended victim dying and its would-be rescuer incapacitated. The red-spot leader recognized Kiyama Achiko and, under orders he understood to require her death, stabbed her in the left breast when she charged him. He believed the order came from Ishido, though he knew that could never be proved. The instructions otherwise required the raiders to leave Toda Mariko untouched if she managed to kill herself, protect Blackthorne, and spare the other women. The leader did not know why Achiko had been singled out; he carried out the order because it had been given and paid for.

The ninja sounded a horn and withdrew through the rooms and passages toward the audience room, using smoke and fire bombs to cover their escape. Before fleeing, their leader scattered poison-tipped caltrops across the floor. Browns pursuing the raiders were struck in the soles of their feet and began to die. The retreat therefore continued the attack’s pattern of turning the defenders’ own urgency against them, even as the survivors regained the rooms.

Blackthorne emerged from the blast in shock, unable at first to recognize where he was. Yabu helped him across to Mariko. Blackthorne moved her kimono aside, felt her nearly imperceptible pulse cease, and understood that she had died. He made the sign of the cross over her and silently prayed in Latin; when he had completed the rite, he tried to stand, collapsed, and was helped to the floor. The explosion had not only destroyed the barrier between Mariko and her attackers: it had left Blackthorne alive to witness her death, but temporarily unable to hear or speak his grief.

The attack’s political meaning was made public by Maeda Etsu, who stood on the battlement veranda supported by a maid. She testified that Mariko had given her life rather than suffer dishonorable capture, that Achiko had chosen death rather than risk capture, and that Blackthorne’s bravery had prevented Mariko’s capture and protected the women from dishonor. Etsu then accused Lord General Ishido of mounting the attack and betraying the Heir and Lady Ochiba, extending the charge to the Council of Regents. Her account was testimony, not proof of who had issued the orders; nevertheless, it transformed a covert assault into a public accusation of treachery against the governing authority.

The Cost of Witness

Etsu’s public accusation carries a cost of its own. After naming Ishido’s attack as dishonorable and a betrayal of the Heir, Lady Ochiba, and the Council of Regents, she says she can no longer live with the shame. Her maid weeps and protests, trying to stop her. The scene leaves the consequences of that resolve unstated, but makes witness itself part of the crisis: the raid has turned private violence into a public charge, and speaking that charge places Etsu under an unbearable pressure of honor.