Gintama 139 - 146 : Yoshiwara Arc 1

Gintama anime always have different story in each chapter. It finds that the "Yorozuya" themes can make all things happen in this anime. In the chapter 139 - 146, Sakata Gintoki and his Yorozuya team make their move on the underground city called Yoshiwara. In these chapters, there are some new appearance of new character. We can say the Yoshiwara protector, Tsukuyo, and then Hinowa, Yoshiwara 'sun' and his son, Seita. Also performing some action about Yato clans, the Yoshiwara leader, Hosen, and Kagura's sister Kamui.

Yoshiwara is underground city thats beyond the laws above grounds. It is the city of eternal nights, where "the men's dream are granted". The background story is about Seita in the searching of his unknown mother. The chapters begin with the scene that Seita steals Gintoki's wallet to find that there is no sort of money in there. After the scene, Gintoki took Seita to Yoshiwara, where Seita needs money to meet a woman whom he believe is his mother. To help Seita, Otose gives Seita the job as helper in Otose Snack, and Gintoki wants to help him too to meet up with his mother. Later, Gintoki cross the guardian of Yoshiwara, Hyakka. The leader of Hyakka is Tsukuyo, known as Death Courtesan of Yoshiwara. And the leader of Yoshiwara, Hosen, known as King of The Night, is protecting Hinowa as the 'sun' of Yoshiwara. The story involved as Kagura meets her Yato brother, Kamui.
The Yoshiwara Arc, serves three great fight between Hosen against Kamui, Kagura-Shinpachi against Yato clan member, Abuto, and Hosen against Gintoki with help of Tsukuyo. Great action, great story, and great life science.