Gintama': Enchousen - episode 1 - 03 Oct, 2012

While Gintoki was gone away, a new leader of the Yorozuya took place. He was built by Gengai Hiraga by orders of Kagura and Shinpachi who were mad at Gintoki for leaving them behind. In order for them to keep doing their work they decided to came up with ideas to make the perfect yorozuya substitute leader that would fill in Gintoki's spot when he was absent. (Source: Wikipedia)