Yume gave Kei-sensei a surprised look. In summary, she and Kiku had to go all around the corners of this abandoned place that even some say have 'Evil spirits'. 
[i]"What?!"[/i] She whispered to herself.
But as Kei-sensei continued, she understood that it was a research for 'survival', a way to escape from this place. Yume stood up and moved back to Kiku's side, clutching onto his sleeve. She couldn't help but feel anxious.
After his request, he asked the two students whatever they wanted to know about this place.
........
But then this flinched her. It was the main question she wanted to ask.
[b]Was there any way to escape?[/b]
So guessing even Kei-sensei didn't know, no matter how filled his book was, but for now,
[i]"Yes... where exactly are we? What is this place? We've heard that there are.... 'killings' here.... is it true?"[/i] she asked, as she glanced at Kiku with anxiety.