You Guys!! Do You Even Have Gintama?! (Part 1) (S01E01)

Long ago, this nation was known as the land of the samurai. The dream-filled Edo skies, upon which the samurai once gazed, are now filled with the ships of the Amanto, beings that suddenly invaded and rose to power. And now these arrogant aliens walk the streets of the city. The samurai have lost their swords, status, and even their honor… In this city former samurai Gintoki Sakata runs the Odd Jobs business. One day he receives a visit from a client named Katoken. To regain something he has lost, Katoken needs 30 million ryo—a lot of money. After listening to Katoken’s endless tale of misfortune, the Odd Jobs trio feels obliged to help out. Meanwhile, the Amanto Kariya and his men gather to plot the takeover of Edo city. (Crunchyroll)