Gintoki and Nizo battle to the death on the deck of Takasugi's ship. The anti-battleship weapon Benizakura has infiltrated Nizo's mind, driving Nizo out of control. Gintoki fights back with a sword forged by Tetsuko. Nizo attacks with overwhelming strength, but slowly, the battle begins to turn in Gintoki's favor. Meanwhile, within the ship, Takasugi plans to use the Benizakura to overthrow the shogunate, but he is confronted by Tetsuya, the man who forged the Benizakura, Tetsuya's younger sister Tetsuko, and Katsura.
But I won't just stand and watch you destroy the people I care for.
Pero no me quedaré quieto viendo cómo 
destruyes a la gente que me importa.
Mas não vou ficar parado vendo você 
destruir tudo com o que me importo.