This is a comedy manga based on a science fiction drama. This is the author's first serialized work. As of December 2005, the manga has sold more than 5 million copies until the 10th volume was released. The OVA of Gintama was released at "JUMPFESTA・ANIMETOUR'05". The production company is SUNRISE. The TV animation of Gintama started on April 4, 2006, and it is broadcast every Tuesday at 19:00 on TV Tokyo. The production company is also SUNRISE, and the director is Shinji Takamatsu. Gintama has been made into a game, and the NDS life simulation game "Gintama Dei ~ Esu Yorozuya Big Riot!" will be released on September 21, 2006. '. At the end of the Edo period (20 years before the original game), a mysterious alien called "Amanto" attacked. As a result, the war between the earthlings and the Amanto broke out instantly. Many samurai and anti-foreigner activists participated in the battle with the Amanto. After seeing the powerful strength of the Amanto, the shogunate finally bowed to the Amanto, abandoned the samurai, and signed an unequal treaty with the Amanto without authorization, allowing them to enter the country. Later, the "Sword Ban Order" was issued, taking away the samurai's swords, making them unable to resist. Since then, the Amanto has been rampant, and the shogunate has been influenced by the Amanto and even controlled, becoming a "puppet regime". In such an era, there was a samurai who lived a whimsical life happily with his companions.