Also known as: 偽物語
Nisemonogatari is a series of light novels by Nisioisin, with drawings by Vofan. It is the sequel to Bakemonogatari. It was made into an anime by Shaft (Company) and released on January 8, 2012.
The story follows the two sisters of Araragi Koyomi, Araragi Karen and Araragi Tsukihi, as they try to prevent the same oddity that cursed Senjougahara Hitagi from spreading further chaos.