Gintama

Twenty years after aliens called the Amanto landed in Edo and reorganized feudal Japan around their treaties, the samurai class is technically illegal and almost entirely unemployed. Gintoki Sakata runs a freelance odd-jobs business out of a snack shop in the new Tokyo with two co-workers he didn't pick: Shinpachi, a salaryman-in-training whose family dojo is folding, and Kagura, a teenage Yato girl who eats more than the rest of the building combined. The show alternates parody with the long shadow of the war Gintoki fought in, and gets longer, sadder, and funnier roughly in equal measure.