The 20th and final volume of Hidekichi Matsumoto's four-panel supernatural comedy manga Honto ni Atta! Reibai-Sensei shipped in Japan on Wednesday. The manga had been running in Monthly Shonen Rival since the magazine's inaugural issue in 2008.

The story revolves around Kibayashi-sensei, a teacher 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.

The series inspired a television anime adaptation with five-minute episodes in 2011.