A yokai named Egen is scheduled to visit the mundane world.
Egen, who dreams of establishing a school in the Underworld, will be observing Abeno and Ashiya's high school for a limited time. Ashiya does his best to help Egen. However, Abeno's foul mood leaves Ashiya bewildered.
There's something bothering Abeno about Egen's visit, but Ashiya is completely unaware of what that is--
Creating a school where everyone 
can study is my long-held dream.
Es ist immerhin mein lang gehegter Traum,
eine Schule zu schaffen, in der alle lernen können.
Construiré una escuela para todos.
Depuis toujours,
je rêve de créer une école
Criar uma escola em que todos possam
estudar é o meu sonho de longa data.