Gintama.

About Gintama

Gintama is a Japanese manga series written and illustrated by Hideaki Sorachi. It was serialized in Shueisha's shōnen manga magazine Weekly Shōnen Jump from December 2003 to September 2018, later in Jump Giga from December 2018 to February 2019, and concluded on the Gintama app, where it ran from May to June 2019. Its chapters were collected in 77 tankōbon volumes. Set in Japan during the Edo period, which has been conquered by aliens named Amanto, the plot follows Gintoki Sakata, a samurai who works as a freelancer in his self-established store, "Yorozuya", alongside his friends Shinpachi Shimura and Kagura, offering a wide range of services to handle various tasks and odd jobs. After his editor suggested doing a historical series, Sorachi incorporated a science fiction setting to develop characters to his liking.