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...
When I heard about the murder, 
I knew exactly what had happened.
Als es zum Mord kam,
wusste ich genau, was es war.
Cuando ocurrió aquel incidente,
supe lo que había sucedido.
Cuando ocurrió aquel incidente,
supe lo que había pasado.
Après ce meurtre,
j’ai tout de suite compris.
Così, quando venni a sapere dell'omicidio,
Quando ouvi sobre o assassinato, eu sabia
 exatamente o que tinha acontecido.