บท 512: Mural

"Master, wait for me." Firey immediately followed Himmel Soan.

Once they disappeared in the crack, it trembled and closed up until it was completely gone as if it had never been there before.

There was a loud rumble.

Himmel Soan looked up. Firey had landed by his side, and the crack above them had disappeared.

"Why is this happening?" Firey tried to break the surface above their heads.

"Stop. We'll take things as they come. Let's keep moving."

Himmel Soan stopped Firey.

The crack wasn't very wide, but this place was quite spacious. This underground cave was so large that Himmel Soan couldn't see its end.

"Hello!" Firey shouted, her echo bouncing off between the walls.

"This place is too big." Himmel Soan frowned.

The ground above them was so thick that it should have caved into the hollow, but a mysterious power seemed to be supporting this place, preventing it from being affected by anything.