To let the dying dog Kintaro see its owner for one last time, Kagura and Katsura sneak it out of the hospital…only to find themselves caught in the war between the “Planet Eaters” (dogs) and “Planet Pukers” (cats), while Earth’s fate hangs in the balance. Escaping from the Planet Pukers, who are after Kintaro, the two head to the hospital where the old man is hospitalized. Meanwhile, the old man, who is supposedly in critical condition, goes missing. The old man’s children request Gintoki’s services, but when he arrives at the hospital…
For him, you were a friend who sustained his lonely existence for many years.
Para él, fuiste un amigo que aguantó 
su solitaria existencia durante años.
Para ele, você era um amigo que 
sustentou sua vida solitária por anos.