Mekki, the Poison Sword
The episode begins with a flashback detailing how Shikizaki Kiki first met Kazune Yasuri, the man who would one day become the first head of the Kyotouryuu style. Jumping back to the future, Emonzaemon and Houou Maniwa face off in the duel that left Penguin Maniwa injured at the end of the previous episode. Emonzaemon gains an advantage over Houou but is sliced down when Panguin hands him Dokutou Mekki. However, Houou loses his mind in the process and wounds Penguin as well.
Aired 13/11/2010EP 11 - Mekki, the Poison Sword

Katanagatari
Yasuri Shichika, seventh successor of the Kyotouryuu (bladeless) sword art, lives on an isolated island with his older sister, Nanami.
One day Shichika is visited by a woman named Togame, who requests his aid in her quest to find and collect the final twelve swords forged by the legendary master swordsmith, Shikizaki Kiki. Shichika and Togame begin their odyssey by leaving the island he called home for over 20 years. They will face twelve individuals who possess and protect Shikizaki's legendary swords.
Join Shichika and Togame on an exciting, epic adventure that defies reality as they discover the true potential of the Kyoutoryuu sword style!
(Source: NIS America)