Kurusu has tracked down the identity of the killer, and revealed her secret to Takuru.  Now she goes to the school to meet with the one behind all the murders.
It was used for an experiment or something 
similar involving Gigalomaniacs.
استُخدِمَتْ لتطبيق تجربة ما لها علاقة بالغيغالومانياك
für Experimente mit
den Gigalomaniacs genutzt.
debía servir para experimentar
con Giga-lo-maniacs.
debía servir para experimentar
con Giga-lo-maniacs.
sur les Gigalomaniacs,
comme les sous-sols de l’hôpital.
proprio come quella struttura sotterranea.
Ele era usado para algum tipo de 
experimento envolvendo Gigalomaníacos.