A power leaks from underneath the school,  Arata and the gang head down into the labyrinth to protect the school from the collapse phenomenon.
She lives in the dungeon beneath the school.
Das Zerfallsphänomen liegt im
Kellerverlies unter der Schule
Vive en el calabozo subterráneo,
Vive en el calabozo subterráneo.
Yui habite dans les donjons.
Vive nelle segrete al di sotto dell'edificio scolastico.
Ela mora numa dungeon, no porão