Festival of Thornys
Tetsunosuke has been ordered to deliver a letter for Hijikata. However, he's captured by the radical Joi Check It Out gang in the process. Tetsunosuke had concealed his identity to join the gang, but now they know that he has connections to the police. He's taken hostage as leverage over the Shinsengumi and Mimawarigumi. However, the Mimawarigumi shows no concern for the hostage and plots to place the blame squarely on the Shinsengumi. Hijikata and the other members are enraged after learning Isaburo's plans. The Shinsengumi and Mimawarigumi are now in an all-out fight.
Aired 13/02/2012EP 45 - Festival of Thornys
Gintama Season 2
After a one-year hiatus, Shinpachi Shimura returns to Edo, only to stumble upon a shocking surprise: Gintoki and Kagura, his fellow Yorozuya members, have become completely different characters! Fleeing from the Yorozuya headquarters in confusion, Shinpachi finds that all the denizens of Edo have undergone impossibly extreme changes, in both appearance and personality. Most unbelievably, his sister Otae has married the Shinsengumi chief and shameless stalker Isao Kondou and is pregnant with their first child.
Bewildered, Shinpachi agrees to join the Shinsengumi at Otae and Kondou's request and finds even more startling transformations afoot both in and out of the ranks of the the organization. However, discovering that Vice Chief Toushirou Hijikata has remained unchanged, Shinpachi and his unlikely Shinsengumi ally set out to return the city of Edo to how they remember it.
With even more dirty jokes, tongue-in-cheek parodies, and shameless references, Gintama' follows the Yorozuya team through more of their misadventures in the vibrant, alien-filled world of Edo.
(Source: MAL Rewrite)