Kuromajo-san ga Tooru!!

The Graduation Album Smells Like the Occult (Part 2) (1x32)

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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.