Roan walked to the end of the tunnel, now having a better sight of the place. Right in front of him, there was a strange realm, spherical buildings floating in space without any visible pattern as far as he could see.
Rean also came out with the shadow kid, asking. "Say, Xian, what is this place?"
Xian didn't expect that question. "It is us?"
Rean and Roan looked at him, confused. "What do you mean?"
Xian then put his hand on the wall by his side, which merged with it. Rean and Roan saw how the black wall seemed to turn liquid, getting a more 'shadowy' color before Xian took his hand off, and the black wall went back to normal. "Everything here is us."
Now the twins understood. These aren't buildings made of some black material. This entire installation was made of shadow beings, just like Xian.
"Wow... were all the things here made of shadow beings like you?" Rean asked, curious. "How did they change into these walls, spheres, and such?"