First season of the Monogatari Series, part 5/6. Contains the arcs Karen Bee and Tsukihi Phoenix from the Nisemonogatari light novels.

In Bakemonogatari, the story centered on Koyomi Araragi, a third year high school student who has recently survived a vampire attack and finds himself mixed up with all kinds of apparitions: gods, ghosts, myths, and spirits. However, in Nisemonogatari, we pick up right where we left off and follow Koyomi as the psychological twists delve deeper and deeper…

(Source: Aniplex)