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--
Do you know how much stress I endured 
today because you weren't talking?
Weißt du eigentlich, wie sehr es mich
gestresst hat, dass du heute nicht geredet hast?
¿Sabes cuánto estrés acumulé
el día de hoy?
T’imagines à quel point ton silence
m’a fait stresser toute la journée ?
Você tem noção de quanto estresse passei
hoje porque você não estava falando?