Gin Tama (銀魂,Silver Soul) is a comedic manga created by Hideaki Sorachi.An OVA of Gin Tama by Sunrise was showing at Jump Festa 2006 Anime Tour in 2005. This was followed by a full anime series which debuted on April 4, 2006 TV Tokyo. As of September 2008, 124 episodes have aired.
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The story takes place in Edo (known today as Tokyo because of the name change in 1868), Japan, which has been taken over by aliens called Amanto since the late Edo period. The samurai of Japan have fallen, and the Amanto placed a ban on carrying swords in public. The story focuses on an eccentric samurai, Gintoki Sakata, his (partial) apprentice Shinpachi Shimura, and a teenage alien girl: Kagura. All three are "free-lancers" who search for work in order to pay the monthly rent, which usually goes unpaid anyway."