Gintama, Chapter 4

Gin Tama (Japanese: 銀魂-ぎんたま- Hepburn: Gin Tama, “Silver Soul”) is a Japanese manga written and illustrated by Hideaki Sorachi and serialized, beginning on December 8, 2003, in Shueisha’s Weekly Shōnen Jump. Set in Edo which has been conquered by aliens named Amanto, the plot follows life from the point of view of samurai Gintoki Sakata, who works as a freelancer alongside his friends Shinpachi Shimura and Kagura in order to pay the monthly rent. Sorachi added the science fiction setting to develop characters to his liking after his editor suggested doing a historical series.