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--
Today is the third day of 
my observational visit.
Heute ist der dritte Tag
meines Observationsbesuchs.
Hoy es el tercer día de mi visita.
C’est mon troisième jour
d’observation.
Hoje é o terceiro dia da minha visita.