The cultural anthropology club at a school in the remote Japanese countryside is doing a report on the AoOni, a mythical creature that inspired a hit video game.  They find that the AoOni was based on a creature who may live in their own area.  But things take a horrible turn when they learn that the creature might still be real, and that the creator of the AoOni game has just committed suicide before they were to meet with him...
If there's no monster like 
Aooni in the school,
Wenn kein Aooni in der Schule ist,
Si todo esto no fuera obra de Ao Oni,
Si todo esto no fuera obra de Ao Oni,
S’il n’y a vraiment pas
de démon bleu,
Se davvero non c'è Aooni
o un mostro come lui nella scuola,
Se não tem um monstro 
como o Aooni na escola,