Serika is taken by the strange man she meets, Takuru, into the school basement. Takuru says that he has an important task to do there, but he's reluctant to take her along at all...
were under the effect of something 
called Delusion Synchronization.
كانوا تحت تأثير شيء يُدعى
تزامُن الوهم
estavam sob o efeito 
de algo chamado Ilusões Síncronas.