The Graduation Album Smells Like the Occult (Part 2)
Ruru attempts to get revenge on Gyubid and Chiyoko by putting Naoki in harm's way so Gyubid will get expelled. With help from the class's otaku nerd, Chiyoko and Gyubid use the magical shiritori game to summon ingredients for an exorcism.
Aired 20/02/2013EP 32 - The Graduation Album Smells Like the Occult (Part 2)

Kuromajo-san ga Tooru!!
Kurotori Chiyoko, a 5th-grader in elementary school, loves the occult. One day, a friend requests her to do a love fortune-telling. Chiyoko tries to summon Cupid, but thanks to a stuffy nose, accidentally summons a witch named Gyubid instead!
From that day on, Chiyoko starts learning witchcraft from Gyubid, the self-proclaimed hottest instructor of the magic world. The training regimen is tough, and punishment for slacking is harsh. Fortunately, Chiyoko is able to keep her extra-curricular studies secret, aided by the fact that no one else can see Gyubid.
(Source: AnimeNfo.com)