Chapter 572: Chapter 566. The Corrupted One

The moment they saw the old man's expression, they knew something was wrong.

"What happened?" Bassena and Zein immediately approached the Iron Mountain. "You've found the source, right? Is there any problem with it?"

"We found it, alright," the old man replied bitterly. He sounded disappointed for some reason; perhaps that was why Naoya took over the explanation. 

Finding a way inside a ruin was harder than just trying to find a way across the forest, even with the absence of an illusion effect. Because of that, Naoya only sent four-star espers and above, including himself. It was tricky even with meticulous planning, because the ruin seemed like the remains of an Old Age lab or research center. With many rooms and floors, it was no different than a labyrinth. Thankfully, they still managed to locate what seemed to be the source of the fog.