Honto ni Atta! Reibai-sensei (ほんとにあった！霊媒先生, lit. Really Existed! Spirit Medium Teacher) is a manga by Hidekichi Matsumoto serialized in Monthly Shonen Rival. An anime adaption is made by DLE Inc. and began airing April 12, 2011.
The story revolves around Kibayashi-sensei, a teacher of the occult whose hobby is speaking with the dead and whose special talent is exorcism. Kibayashi-sensei knows everything about the other world, but nothing about our own world.