Gintama. Shirogane no Tamashii-hen

Utsuro's true nature and goal have been exposed, and his corruption of Altana reserves across multiple worlds draws the Altana Liberation Army toward Earth. Edo becomes the center of an interplanetary war as the invading force claims to be freeing the planet from the Tendoshuu while devastating the very people it supposedly came to liberate.

With the shogunate broken, the Shogun absent, and the Yorozuya initially nowhere to be found, former enemies and old allies are forced onto the same side. Gintoki, Kagura, Shinpachi, and the many lives tied to Shouyou must gather everything they have left for a battle over Edo, Earth, and Utsuro's plan to destroy both the planet and himself.